Journal of Oral and Maxillofacial Surgery Medicine and Pathology最新文献

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Posterior medial extension osteochondroma of mandibular head causing hearing loss 下颌骨后内侧伸骨软骨瘤引起听力损失
IF 0.4
Journal of Oral and Maxillofacial Surgery Medicine and Pathology Pub Date : 2026-01-01 Epub Date: 2025-08-10 DOI: 10.1016/j.ajoms.2025.08.002
Hiroki Taniguchi , Tadashi Chida , Ryuhei Yamada , Daiki Hirai , Ryoga Utsunomiya , Ryosuke Kawamura , Ryo Otani , Haruka Akiyama , Marimo Ichikawa , Osamu Ishihara
{"title":"Posterior medial extension osteochondroma of mandibular head causing hearing loss","authors":"Hiroki Taniguchi ,&nbsp;Tadashi Chida ,&nbsp;Ryuhei Yamada ,&nbsp;Daiki Hirai ,&nbsp;Ryoga Utsunomiya ,&nbsp;Ryosuke Kawamura ,&nbsp;Ryo Otani ,&nbsp;Haruka Akiyama ,&nbsp;Marimo Ichikawa ,&nbsp;Osamu Ishihara","doi":"10.1016/j.ajoms.2025.08.002","DOIUrl":"10.1016/j.ajoms.2025.08.002","url":null,"abstract":"<div><div>Osteochondroma is a benign bone tumor that often presents with malocclusion and facial asymmetry when it occurs in the mandibular condyle. We report a rare case of a female patient in her 80s with an osteochondroma of the right mandibular condyle extending posteromedially, compressing and narrowing the external auditory canal (EAC), resulting in conductive hearing loss. She underwent resection of the mandibular condyle, resulting in EAC decompression and subjective improvement in hearing. The unusual growth pattern of the tumor in this case likely contributed to the absence of typical symptoms, resulting in a delayed diagnosis. A literature review revealed that tumors that cause EAC stenosis often exhibit posteromedial growth, indicating a unique growth pattern. When evaluating hearing loss in the older population, tumorous lesions in the maxillofacial region should be considered in the differential diagnosis in addition to age-related changes.</div></div>","PeriodicalId":45034,"journal":{"name":"Journal of Oral and Maxillofacial Surgery Medicine and Pathology","volume":"38 1","pages":"Pages 94-97"},"PeriodicalIF":0.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145475743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mandibular fractures associated with third molar extraction: A systematic review and meta-analysis 下颌骨折与第三磨牙拔牙相关:系统回顾和荟萃分析
IF 0.4
Journal of Oral and Maxillofacial Surgery Medicine and Pathology Pub Date : 2026-01-01 Epub Date: 2025-08-05 DOI: 10.1016/j.ajoms.2025.07.015
Pablo Andrés Crespo-Reinoso, Karen Andrea Ochoa Ayora
{"title":"Mandibular fractures associated with third molar extraction: A systematic review and meta-analysis","authors":"Pablo Andrés Crespo-Reinoso,&nbsp;Karen Andrea Ochoa Ayora","doi":"10.1016/j.ajoms.2025.07.015","DOIUrl":"10.1016/j.ajoms.2025.07.015","url":null,"abstract":"<div><h3>Objective</h3><div>This study aims to analyze the association between third molar surgery and mandibular fractures, with the goal of providing information to help surgeons prevent such fractures and guide appropriate treatment when they occur.</div></div><div><h3>Methods</h3><div>A systematic review was conducted in accordance with the PRISMA 2020 guidelines. A comprehensive search strategy was applied in PubMed and ScienceDirect using relevant MeSH terms. Inclusion criteria were based on the PICO framework. Data extraction and risk of bias assessments were performed for all included studies.</div></div><div><h3>Results</h3><div>The combined proportion of mandibular fractures was 4.2 %, with a confidence interval ranging from 2.7 % to 5.7 %. An extremely high heterogeneity was observed (I² = 99.1 %, Q = 766.05, p &lt; 0.001), indicating true variation among the studies. Meta-regression showed no significant relationship between the fracture proportion and variables such as mean age or percentage of male participants. Subgroup analysis revealed that studies reporting postoperative fractures had higher combined proportions, suggesting a potentially important clinical pattern worthy of further investigation.</div></div><div><h3>Conclusions</h3><div>The present study analyzed the association between third molar surgery and mandibular fractures, aiming to provide useful information for their prevention. It was observed that these fractures occur more frequently in the postoperative period, highlighting the importance of implementing preventive measures before, during and the procedure.</div></div>","PeriodicalId":45034,"journal":{"name":"Journal of Oral and Maxillofacial Surgery Medicine and Pathology","volume":"38 1","pages":"Pages 11-15"},"PeriodicalIF":0.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145475830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Antibiotic resistance in odontogenic infections – Systematic review 牙源性感染的抗生素耐药性-系统综述
IF 0.4
Journal of Oral and Maxillofacial Surgery Medicine and Pathology Pub Date : 2026-01-01 Epub Date: 2025-07-15 DOI: 10.1016/j.ajoms.2025.07.008
Hallab Lamiae , Taleb Bouchra
{"title":"Antibiotic resistance in odontogenic infections – Systematic review","authors":"Hallab Lamiae ,&nbsp;Taleb Bouchra","doi":"10.1016/j.ajoms.2025.07.008","DOIUrl":"10.1016/j.ajoms.2025.07.008","url":null,"abstract":"<div><h3>Objectives/hypothesis</h3><div>We review the resistance of antibiotics in odontogenic infection based on the various studies conducted for this purpose.</div></div><div><h3>Methods</h3><div>An electronic search was conducted since March 2022 until November 2022 on MEDLINE database, ELSEVIER- ScienceDirect, Ebsco, Scopus and Google Scholar to collect sufficient articles relevant to our subject. Data were extracted and analyzed from selected studies including study type, sample size and characteristics of microbiology and resistance found in these patients.</div></div><div><h3>Results</h3><div>A total of 120 publications were found. After screening titles, abstracts, and duplicates studies were retained 97 for a full text reading. Then, twenty seven studies were retained for our systematic review based on the inclusion and exclusion criteria which will be described later.</div></div><div><h3>Conclusion</h3><div>Odontogenic infections (OIs) are common in the oral and maxillofacial regions and can affect both genders at any age. The microbiology involved is very diversified, and frequently mixed. Management includes prescription of antimicrobial medication, surgical and etiological treatment. Then, the over-use or inappropriate selection of systemic antibiotic therapy is identified as a significant factor in the development of antibiotic-resistant bacterial strains.</div></div>","PeriodicalId":45034,"journal":{"name":"Journal of Oral and Maxillofacial Surgery Medicine and Pathology","volume":"38 1","pages":"Pages 118-132"},"PeriodicalIF":0.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145476152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
X-linked hypophosphatemia with multiple radicular cysts: a case report x连锁低磷血症伴多发性根性囊肿1例报告
IF 0.4
Journal of Oral and Maxillofacial Surgery Medicine and Pathology Pub Date : 2026-01-01 Epub Date: 2025-07-09 DOI: 10.1016/j.ajoms.2025.07.007
Katsuhiko Hayashi, Takeshi Takayama, Katsuhito Watanabe, Yuki Sugiyama, Yuri Kirihara
{"title":"X-linked hypophosphatemia with multiple radicular cysts: a case report","authors":"Katsuhiko Hayashi,&nbsp;Takeshi Takayama,&nbsp;Katsuhito Watanabe,&nbsp;Yuki Sugiyama,&nbsp;Yuri Kirihara","doi":"10.1016/j.ajoms.2025.07.007","DOIUrl":"10.1016/j.ajoms.2025.07.007","url":null,"abstract":"<div><div>X-linked hypophosphatemia (XLH) is a rare genetic disorder characterized by hyperphosphaturia and hypophosphatemia, leading to impaired mineralization and dysplasia of bones and dentin. A 19-year-old man with XLH was referred to our department for diagnosis and treatment of radiolucent lesions in the maxilla and mandible. Panoramic radiography revealed enlarged pulp chambers, thin dentin, wide root canals, and root apex enlargement in all teeth, as characteristic features of XLH, as well as multiple radiolucent lesions involving the roots of teeth in the maxilla and mandible. A biopsy confirmed the diagnosis of radicular cyst. Subsequently, 11 teeth were extracted, and seven cysts were surgically enucleated under general anesthesia. Histopathological examination confirmed the diagnosis of radicular cysts for all seven cysts. Examination of decalcified sections of the extracted left maxillary lateral incisor revealed interglobular dentin, indicating marked dentin hypocalcification. Postoperatively, the patient has remained stable and continues to receive regular dental care at his primary dental clinic. Since XLH is associated with pulpal infection and internal dental fistula formation even in the absence of caries or trauma, close collaboration between dentists and physicians managing patients with XLH is essential from early childhood. Without appropriate oral management, XLH patients can develop apical periodontitis and radicular cysts that require surgical intervention, as observed in the present case.</div></div>","PeriodicalId":45034,"journal":{"name":"Journal of Oral and Maxillofacial Surgery Medicine and Pathology","volume":"38 1","pages":"Pages 179-182"},"PeriodicalIF":0.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145476160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Observation of bone healing after Le Fort I osteotomy with tuberosity separation Le Fort I型截骨术合并结节分离术后骨愈合的观察
IF 0.4
Journal of Oral and Maxillofacial Surgery Medicine and Pathology Pub Date : 2026-01-01 Epub Date: 2025-08-15 DOI: 10.1016/j.ajoms.2025.08.001
Satoko Koeda , Atsushi Nakamura , Makiko Yamamura , Hiroki Akiyama , Sigeru Ishii , Shouhei Ogisawa , Tatsuo Shirota , Shuichi Nishikubo
{"title":"Observation of bone healing after Le Fort I osteotomy with tuberosity separation","authors":"Satoko Koeda ,&nbsp;Atsushi Nakamura ,&nbsp;Makiko Yamamura ,&nbsp;Hiroki Akiyama ,&nbsp;Sigeru Ishii ,&nbsp;Shouhei Ogisawa ,&nbsp;Tatsuo Shirota ,&nbsp;Shuichi Nishikubo","doi":"10.1016/j.ajoms.2025.08.001","DOIUrl":"10.1016/j.ajoms.2025.08.001","url":null,"abstract":"<div><h3>Objective</h3><div>This study aimed to examine bone healing after Le Fort I (LFI) osteotomy with tuberosity separation.</div></div><div><h3>Methods</h3><div>Twenty patients who had undergone maxillary advance and clockwise rotation for skeletal class III malocclusion were included. LFI osteotomy with tuberosity separation was performed on the patients. The osteotomized maxilla was fixed to the piriform rim using bioabsorbable plates and to the zygomatic buttress using titanium miniplates (thickness: 0.6 mm). Computed tomography (CT) images were taken after 2 months (T1) and &gt; 10 months (T2) of surgery. The piriform rim, maxillary sinus anterior wall, zygomatic buttress, and maxillary tuberosity were evaluated on a four-point scale: bone resorption (−2), no bone contact (−1), bone contact (0), and bone continuity (1).</div></div><div><h3>Results</h3><div>The average total scores for each site were as follows: maxillary tuberosity, 0.5 ± 0.4 (T1) and 1.0 ± 1.2 (T2); zygomatic buttress, −0.6 ± 0.6 (T1) and 0.1 ± 0.9 (T2); maxillary sinus anterior wall, −0.9 ± −0.6 (T1) and −0.3 ± 2.0 (T2); and aperture piriform rim, −0.5 ± 0.8 (T1) and 0.9 ± 1.5 (T2). The score increased significantly at all sites at T2 (<em>p</em> &lt; 0.001). The CT values in the tuberosity site were 347.6 ± 134.1 at T1 and 418.8 ± 161.4.</div></div><div><h3>Conclusions</h3><div>The maxillary tuberosity showed the earliest evidence of bone continuity.</div></div>","PeriodicalId":45034,"journal":{"name":"Journal of Oral and Maxillofacial Surgery Medicine and Pathology","volume":"38 1","pages":"Pages 59-64"},"PeriodicalIF":0.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145475737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A case of localized tenosynovial giant cell tumor in the temporomandibular joint recurred 9 years after surgery 一例颞下颌关节局部腱鞘巨细胞瘤术后9年复发
IF 0.4
Journal of Oral and Maxillofacial Surgery Medicine and Pathology Pub Date : 2026-01-01 Epub Date: 2025-07-13 DOI: 10.1016/j.ajoms.2025.07.001
Kaori Matsumura , Kazunari Oobu , Taichi Hattori , Keisuke Mori , Noritaka Komune , Shintaro Kawano , Eiro Kubota
{"title":"A case of localized tenosynovial giant cell tumor in the temporomandibular joint recurred 9 years after surgery","authors":"Kaori Matsumura ,&nbsp;Kazunari Oobu ,&nbsp;Taichi Hattori ,&nbsp;Keisuke Mori ,&nbsp;Noritaka Komune ,&nbsp;Shintaro Kawano ,&nbsp;Eiro Kubota","doi":"10.1016/j.ajoms.2025.07.001","DOIUrl":"10.1016/j.ajoms.2025.07.001","url":null,"abstract":"<div><div>Tenosynovial giant cell tumor (TGCT), as proposed by Jaffe et al. in 1941, is initially reported as a disease involving inflammatory proliferative changes in the synovial membrane. However, its neoplastic nature has been recently demonstrated. The lesion mostly affects the joint of long bones, but it rarely occurs in the temporomandibular joint. Here we report a case of TGCT that occurred in the temporomandibular joint and recurred 9 years postoperatively.</div></div>","PeriodicalId":45034,"journal":{"name":"Journal of Oral and Maxillofacial Surgery Medicine and Pathology","volume":"38 1","pages":"Pages 69-75"},"PeriodicalIF":0.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145475738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Is it possible to predict the postoperative sequelae following third molar surgery using hematological biomarkers? 是否有可能用血液学生物标志物预测第三磨牙手术后的后遗症?
IF 0.4
Journal of Oral and Maxillofacial Surgery Medicine and Pathology Pub Date : 2026-01-01 Epub Date: 2025-06-27 DOI: 10.1016/j.ajoms.2025.06.014
Birkan Eyup Yilmaz , Mehmet Melih Omezli , Damla Torul
{"title":"Is it possible to predict the postoperative sequelae following third molar surgery using hematological biomarkers?","authors":"Birkan Eyup Yilmaz ,&nbsp;Mehmet Melih Omezli ,&nbsp;Damla Torul","doi":"10.1016/j.ajoms.2025.06.014","DOIUrl":"10.1016/j.ajoms.2025.06.014","url":null,"abstract":"<div><h3>Objective</h3><div>The Neutrophil-Lymphocyte Ratio (NLR), Platelet-Lymphocyte Ratio (PLR) and C-reactive protein (CRP) ratio are employed as prognostic indicators in a range of surgical procedures. The utilisation of these biomarkers as prognostic indicators in various surgeries suggest that they may also be usefull in oral surgeries. This study aims to determine whether NLR, PLR and CRP may be utilized as prognostic markers to predict post-operative sequelae after mandibular third molar surgery.</div></div><div><h3>Methods</h3><div>NLR, PLR, and CRP were obtained from routine hemogram, and biochemistry tests of the patients. Edema, trismus, pain with Visual Analog Scale (VAS), analgesic consumption (AC), and Quality of Life (QoL) were measured before and after surgery. Edema and trismus on the 2nd and 7th days, VAS scores, AC up to 7th day, and QoL on 7th day were measured post-operatively.</div></div><div><h3>Results</h3><div>Forty-six patients were included. Significant correlations were found between pain and NLR, and CRP during first 6, and PLR first 4 days. Significant positive correlations were found between AC and NLR and CRP on all days. Significant relations were found between PLR and AC on the 3rd and 4th days. Significant positive correlations were found between operation time and trismus, edema, and QoL. NLR and CRP were found more successful in predicting AC and pain than PLR.</div></div><div><h3>Conclusion</h3><div>These results suggest that NLR, PLR, and CRP are useful predictors that can be utilized to improve pain management, augment patient comfort throughout the healing process, and implement the required adjustments to treatment approaches.</div></div>","PeriodicalId":45034,"journal":{"name":"Journal of Oral and Maxillofacial Surgery Medicine and Pathology","volume":"38 1","pages":"Pages 29-35"},"PeriodicalIF":0.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145475733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Incidental papillary thyroid carcinoma metastases in neck dissection specimens of oral cancer: Three cases 口腔癌颈部解剖标本中偶发甲状腺乳头状癌转移3例
IF 0.4
Journal of Oral and Maxillofacial Surgery Medicine and Pathology Pub Date : 2026-01-01 Epub Date: 2025-07-22 DOI: 10.1016/j.ajoms.2025.07.011
Keisuke Ito, Yasunori Konno, Misaki Arima, Yuki Oikawa, Shoken Suzuki, Kenichiro Suzuki, Mineyo Fukuchi, Hidemitsu Igarashi, Hiroshi Takano, Masayuki Fukuda
{"title":"Incidental papillary thyroid carcinoma metastases in neck dissection specimens of oral cancer: Three cases","authors":"Keisuke Ito,&nbsp;Yasunori Konno,&nbsp;Misaki Arima,&nbsp;Yuki Oikawa,&nbsp;Shoken Suzuki,&nbsp;Kenichiro Suzuki,&nbsp;Mineyo Fukuchi,&nbsp;Hidemitsu Igarashi,&nbsp;Hiroshi Takano,&nbsp;Masayuki Fukuda","doi":"10.1016/j.ajoms.2025.07.011","DOIUrl":"10.1016/j.ajoms.2025.07.011","url":null,"abstract":"<div><div>Incidental papillary thyroid carcinoma (PTC) metastases discovered during neck dissection for oral cancer present unique diagnostic and therapeutic challenges. We report three cases of incidental PTC metastases found during treatment of oral squamous cell carcinoma (SCC). Three patients underwent modified radical neck dissection as part of their oral SCC treatment and histopathological examination revealed unexpected PTC metastases in the cervical lymph nodes. The first case (tongue SCC, cT2N2bM0) had two PTC metastases in the right middle and lower internal jugular nodes. The second case (tongue SCC, cT3N2bM0) had eight PTC metastases across multiple neck levels, with the subsequent discovery of a 2 mm primary thyroid tumor. The third case (maxillary SCC, cT4aN2bM0) had one PTC metastasis in the left lower internal jugular node. None showed thyroid abnormalities in preoperative imaging. In the second case, total thyroidectomy was performed postoperatively, and the diagnosis of thyroid cancer was confirmed micropapillary thyroid carcinoma (pT1aN2bM0). These cases highlight the importance of thorough pathological examination of neck dissection specimens. The management of incidental PTC requires careful consideration of multiple factors, including primary cancer status, patient age, and overall health condition. The typically favorable prognosis of PTC often allows prioritization of more aggressive concurrent malignancies. While standard imaging may miss approximately 2 % of thyroid cancers, particularly smaller tumors, our experience indicates that regular ultrasound monitoring is effective for disease surveillance. These findings suggest the need for established protocols in managing such incidental discoveries, balancing treatment necessity against patient burden.</div></div>","PeriodicalId":45034,"journal":{"name":"Journal of Oral and Maxillofacial Surgery Medicine and Pathology","volume":"38 1","pages":"Pages 88-93"},"PeriodicalIF":0.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145475742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Myoepithelial carcinoma ex pleomorphic adenoma of the upper lip: A case report and literature review 上唇肌上皮癌多形性腺瘤1例报告并文献复习
IF 0.4
Journal of Oral and Maxillofacial Surgery Medicine and Pathology Pub Date : 2026-01-01 Epub Date: 2025-07-04 DOI: 10.1016/j.ajoms.2025.07.004
Satoshi Niwa, Hirotsugu Umeda, Kenichiro Uchida, Katsuaki Mishima
{"title":"Myoepithelial carcinoma ex pleomorphic adenoma of the upper lip: A case report and literature review","authors":"Satoshi Niwa,&nbsp;Hirotsugu Umeda,&nbsp;Kenichiro Uchida,&nbsp;Katsuaki Mishima","doi":"10.1016/j.ajoms.2025.07.004","DOIUrl":"10.1016/j.ajoms.2025.07.004","url":null,"abstract":"<div><div>Carcinoma ex pleomorphic adenoma (CXPA) is a malignant tumor that develops from pleomorphic adenoma (PA) and rarely occurs in the minor salivary glands. The malignant components are most frequently classified as adenocarcinoma not otherwise specified or salivary duct carcinoma. A search of the literature revealed only one previous report of myoepithelial carcinoma ex pleomorphic adenoma (MEC-exPA) in the upper lip. In this report, we present a second case. A 74-year-old man presented with a 15-year history of a mass in the left upper lip. The tumor was resected under general anesthesia. Histopathological examination of the resected specimen showed a biphasic composition with PA areas and malignant changes. The carcinoma comprised atypical myoepithelial cells expressing both myoepithelial and epithelial markers. Based on these findings supported by immunohistochemical results, the final diagnosis was MEC-exPA. No signs of recurrence or metastasis have been observed as of two years after surgery.</div></div>","PeriodicalId":45034,"journal":{"name":"Journal of Oral and Maxillofacial Surgery Medicine and Pathology","volume":"38 1","pages":"Pages 76-81"},"PeriodicalIF":0.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145475739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An ectopic mandibular third molar with inflammatory gubernaculum dentis migrated beyond the inferior edge: A case report 下颌骨第三磨牙异位伴炎根带牙移出下缘1例
IF 0.4
Journal of Oral and Maxillofacial Surgery Medicine and Pathology Pub Date : 2026-01-01 Epub Date: 2025-08-19 DOI: 10.1016/j.ajoms.2025.08.008
Yuki Nagata , Katsuhiko Amano , Yu Tokushige , Shohei Tamura , Seiko Takeda , Seiji Iida
{"title":"An ectopic mandibular third molar with inflammatory gubernaculum dentis migrated beyond the inferior edge: A case report","authors":"Yuki Nagata ,&nbsp;Katsuhiko Amano ,&nbsp;Yu Tokushige ,&nbsp;Shohei Tamura ,&nbsp;Seiko Takeda ,&nbsp;Seiji Iida","doi":"10.1016/j.ajoms.2025.08.008","DOIUrl":"10.1016/j.ajoms.2025.08.008","url":null,"abstract":"<div><div>In oral surgery, impacted mandibular third molars are subjected to routine extractions. However, ectopic mandibular third molars (EMTMs) severely displaced are seen in a few cases. EMTMs are often accompanied with some lesions of odontogenic cysts and tumors which cause the severe dislocation as they grow. Here, we present a rare case of EMTM indicating deep impaction and distal migration in the absence of odontogenic lesions, and demonstrate the surgical treatment using both intra and extraoral approach. The patient was a 58-year-old Japanese female having a severely displaced left mandibular third molar. The EMTM was found to be with apical/periapical periodontitis of the second molar. The imaging exam resulted in possible involvement of gubernaculum dentis (GD) which was a characteristic feature of linear radiolucent area between the two teeth. We planned and performed the extractions of the second and third molars by using intraoral and extraoral approach, respectively, under general anesthesia. The specimen was inflammatory granulation tissue of impaired GD. The prognosis was free of unfavorable symptoms. The involvement of GD should be considered as one of the candidate factors for odontogenic pathology when diagnosing EMTMs.</div></div>","PeriodicalId":45034,"journal":{"name":"Journal of Oral and Maxillofacial Surgery Medicine and Pathology","volume":"38 1","pages":"Pages 113-117"},"PeriodicalIF":0.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145475741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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