Anatomical Science International最新文献_第7页

Trifurcation of the abdominal aorta into one common internal iliac trunk and two external iliac arteries. 腹主动脉分岔成一条髂内主干和两条髂外动脉。

IF 1.2 4区医学

Anatomical Science International Pub Date : 2025-04-21 DOI: 10.1007/s12565-025-00842-5

Mohammadali M Shoja, R Shane Tubbs, Lewis B Schwartz

引用次数: 0

The left colic artery: a comprehensive analysis. 左结肠动脉：综合分析。

IF 1.2 4区医学

Anatomical Science International Pub Date : 2025-04-18 DOI: 10.1007/s12565-025-00841-6

Andrzej Wrona, Jakub Gliwa, Martyna Dziedzic, Patryk Ostrowski, Michał Bonczar, Tomasz Bereza, Mateusz Sporek, Wadim Wojciechowski, Jerzy Walocha, Mateusz Koziej

{"title":"The left colic artery: a comprehensive analysis.","authors":"Andrzej Wrona, Jakub Gliwa, Martyna Dziedzic, Patryk Ostrowski, Michał Bonczar, Tomasz Bereza, Mateusz Sporek, Wadim Wojciechowski, Jerzy Walocha, Mateusz Koziej","doi":"10.1007/s12565-025-00841-6","DOIUrl":"https://doi.org/10.1007/s12565-025-00841-6","url":null,"abstract":"The anatomy of the left colic artery (LCA) is subject to a considerable level of variability, both in its origin, branching pattern, and location in the abdominal cavity. Due to this variability, many studies have tried to describe the vascular anatomy of this anatomical entity using various classifications. It is hoped that the results of the present study may aid surgeons in increasing their anatomical knowledge relevant to colorectal surgeries. A retrospective analysis, including 75 consecutive patients, was conducted to assess the anatomical and morphometric variations of the LCA. Finally, a total of 67 LCAs were included in this study. The majority of the LCA originated directly (N = 48; 71.64%) or indirectly via the colo-sigmoid trunk (N = 18; 26.87%) from the inferior mesenteric artery (IMA). The most common variation of the LCA, according to the Yada, or analogical Wang, classification, was found to be Type I (N = 28; 50.00%). The median diameter of the LCA at its origin was found to be 2.12 mm (LQ = 1.77; HQ = 2.51). The median cross-sectional area of the LCA at its origin was set to be 3.38 mm2 (LQ = 2.29; HQ = 4.33). In conclusion, this study provides a detailed analysis of the anatomical and morphometric variations of the LCA, offering valuable insights for improving the safety and effectiveness of colorectal surgeries, particularly during procedures involving ligation of the IMA. These results emphasize the need for thorough preoperative imaging and anatomical understanding to minimize the risk of iatrogenic injury. Preserving the LCA during low ligation of the IMA is shown to be crucial for maintaining adequate blood supply to the remaining bowel, reducing the risk of ischemia, and ensuring better patient outcomes.","PeriodicalId":7816,"journal":{"name":"Anatomical Science International","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143962607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tendon variations of the fibularis brevis and extensor muscles in leg: a case report and a brief review of the literature. 腿短腓骨和伸肌的肌腱变异：一个病例报告和简要的文献回顾。

IF 1.2 4区医学

Anatomical Science International Pub Date : 2025-04-18 DOI: 10.1007/s12565-025-00837-2

Mehtap Seyaz, Kübra Yazar İyigün, Şeyma Ergen, Kenan Öztürk

{"title":"Tendon variations of the fibularis brevis and extensor muscles in leg: a case report and a brief review of the literature.","authors":"Mehtap Seyaz, Kübra Yazar İyigün, Şeyma Ergen, Kenan Öztürk","doi":"10.1007/s12565-025-00837-2","DOIUrl":"https://doi.org/10.1007/s12565-025-00837-2","url":null,"abstract":"The present case report aims to present tendon variations of the extensor hallucis longus, extensor digitorum longus, fibularis brevis and fibularis tertius. During routine dissection classes for anatomy training, accessory tendon variations were observed in both feet of a 76-year-old male Caucasian cadaver. The accessory tendons were made visible by excising the surrounding tissues. A single bilateral accessory tendon arising from the fibularis brevis, passing through the canal within the fibularis tertius tendons and ending in the dorsal aponeurosis of the fifth toe, was observed as well as a bilateral single accessory tendon originating from the extensor hallucis longus and ending on the dorsomedial side of the first metatarsophalangeal joint capsule. We came across a unilateral (right side) double accessory tendon arising from the extensor digitorum longus and ending on the body of the fifth metatarsal bone. Additionally, we detected bilateral double tendon at the insertion of the fibularis tertius on the base of the fifth metatarsal bone. These four muscles are of clinical importance because the extensor hallucis longus is used in the correction of hallux varus deformity, the fibularis brevis is used for tendon transfer in Achilles tendon ruptures, and the fibularis tertius and the extensor digitorum longus tendons are used to correct drop foot deformity. Therefore, knowing the variations of these muscles will be beneficial to clinicians.","PeriodicalId":7816,"journal":{"name":"Anatomical Science International","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143960573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Morphometric evaluation of the human hippocampus and hippocampal subfield volume characteristics by VolBrain/HIPS. 用VolBrain/HIPS对人类海马和海马亚区体积特征的形态计量学评价。

IF 1.2 4区医学

Anatomical Science International Pub Date : 2025-04-18 DOI: 10.1007/s12565-025-00839-0

Kemal Emre Özen, Özge Coşkun Sağlam, Cansu Kibar Karagöz, Hatice Yenigül, Hassan Bagheri, Turgay Şahin, Gülhan Ertan Akan, Kadir Bozdoğan, Niyazi Acer

{"title":"Morphometric evaluation of the human hippocampus and hippocampal subfield volume characteristics by VolBrain/HIPS.","authors":"Kemal Emre Özen, Özge Coşkun Sağlam, Cansu Kibar Karagöz, Hatice Yenigül, Hassan Bagheri, Turgay Şahin, Gülhan Ertan Akan, Kadir Bozdoğan, Niyazi Acer","doi":"10.1007/s12565-025-00839-0","DOIUrl":"https://doi.org/10.1007/s12565-025-00839-0","url":null,"abstract":"In the literature, research often utilizes digital segmentation methods like VolBrain, aiding in anatomical understanding. However, racial and population-specific differences remain unclear but may be important for clinical interpretation. We seek to enhance clinical perspectives by providing normative data and insights into hippocampal morphology, potentially advancing diagnostic and prognostic methodologies in neurological disorders. We think that it is necessary to discuss the reported asymmetry data by VolBrain. There might be inaccuracies or inconsistencies in how asymmetry is measured and reported. MRIs of the 138 healthy individuals (66 females, 72 males) were included. The VolBrain-HIPS pipeline was preferred for automatic segmentation. Alternative methods were recruited, including the total hippocampal volume for the adjustment of the volumetric data. Asymmetry index was accepted as the indicator of the magnitude of the asymmetry and negative asymmetry index data was positivized. Gender and side comparisons of the hippocampal data were presented not only for absolute measurement but also for the adjusted volumetric data. Comparisons for the magnitude of the asymmetry were carried out as well as the regression modeling based on age and gender. Hippocampus-adjusted volume information should also be considered when analyzing VolBrain data and making clinical or anatomical decisions. The asymmetry data produced by VolBrain should be considered as a magnitude scale of the asymmetry in individuals with right or left dominant hippocampus or hippocampus subfield. Alternative significant regression models were introduced to observe how the volumetric numerical composition of the hippocampus subfields changes with age.","PeriodicalId":7816,"journal":{"name":"Anatomical Science International","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143958936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A rare variant of double origin of the left vertebral artery. 左椎动脉双重起源的罕见变异。

IF 1.2 4区医学

Anatomical Science International Pub Date : 2025-04-12 DOI: 10.1007/s12565-025-00836-3

George Triantafyllou, Panagiotis Papadopoulos-Manolarakis, Fabrice Duparc, George Tsakotos, Maria Piagkou

{"title":"A rare variant of double origin of the left vertebral artery.","authors":"George Triantafyllou, Panagiotis Papadopoulos-Manolarakis, Fabrice Duparc, George Tsakotos, Maria Piagkou","doi":"10.1007/s12565-025-00836-3","DOIUrl":"https://doi.org/10.1007/s12565-025-00836-3","url":null,"abstract":"The vertebral artery (VA) demonstrates considerable variability, including infrequent morphologic variants like double origin. The current imaging report presents an atypical case of a dual origin of a left vertebral artery (LVA), which was identified incidentally during routine computed tomography angiography of a 51-year-old male patient. The typical LVA originated from the left subclavian artery (LSCA), and the other one was an aberrant LVA (ALVA) that arose from the aortic arch (AA) in between the left common carotid artery (LCCA) and the LSCA. The two vessels (LVA and ALVA) converged proximally to the transverse process of the C6 vertebra. The embryological explanation for this variant likely pertains to the persistence of primitive dorsal aortic segments and intersegmental arteries. Although rare, with a prevalence of 0.1%, the occurrence of LVA double origin may have significant clinical implications, including alterations in hemodynamics, an increased risk of VA dissection, and complications during surgical or endovascular procedures. The identification of such variants through preoperative imaging is essential to prevent iatrogenic complications.","PeriodicalId":7816,"journal":{"name":"Anatomical Science International","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143958196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Does gender influence learning, perceptions and retention in regional anatomy dissection courses? 性别是否会影响区域解剖学解剖课程的学习、认知和保持？

IF 1.2 4区医学

Anatomical Science International Pub Date : 2025-04-05 DOI: 10.1007/s12565-025-00834-5

Veronica Antipova, Martin Siwetz, Franz A Fellner, Simone Manhal, Julian F Niedermair, Benjamin Ondruschka, Amélie J Poilliot, Monika Wimmer-Röll, Andreas Wree, Niels Hammer

{"title":"Does gender influence learning, perceptions and retention in regional anatomy dissection courses?","authors":"Veronica Antipova, Martin Siwetz, Franz A Fellner, Simone Manhal, Julian F Niedermair, Benjamin Ondruschka, Amélie J Poilliot, Monika Wimmer-Röll, Andreas Wree, Niels Hammer","doi":"10.1007/s12565-025-00834-5","DOIUrl":"https://doi.org/10.1007/s12565-025-00834-5","url":null,"abstract":"Medical educators should understand the differences within the medical student population, including gender. Research on gender effects on learning and skill acquisition has yielded contradictory results, particularly in anatomy learning among undergraduate medical students. While various dissection course settings have been evaluated, gender-specific differences have largely been overlooked. This study examined gender differences in several aspects of anatomy education. First, the ability of undergraduate medical students to identify anatomical structures was assessed to determine gender differences in learning gains. Second, learning outcomes were compared between a 3-month and a 1-month regional anatomy course, with attention to gender. Third, knowledge retention was evaluated at 6- and 12-month follow-ups. Finally, student perceptions of different embalming methods for anatomy learning were assessed with a focus on gender. Minor differences were observed between genders across different regions in learning gains. Scores from the 3-month course were higher than those from the 1-month course, regardless of gender, particularly for the neck, thorax, and abdomen. A significant knowledge gain was noted in abdominal anatomy at the 6- and 12-month follow-up: scores improved by 56% in females and by 68% in males. The comparison of Thiel- versus ethanol-based embalming revealed gender differences regarding tissue pliability and the utility of tissues for achieving learning objectives. In conclusion, subtle differences appear to exist between female and male students in terms of perceptions and learning outcomes in gross anatomy dissection courses. These findings will be useful in developing new curricula for undergraduate medical students, taking into account gender differences in the context of regional anatomy dissection courses.","PeriodicalId":7816,"journal":{"name":"Anatomical Science International","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143787542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of semicircular canal dehiscence using micro-computed tomography and comparison with cone-beam computed tomography. 微计算机断层扫描对半规管破裂的评价及与锥束计算机断层扫描的比较。

IF 1.2 4区医学

Anatomical Science International Pub Date : 2025-04-03 DOI: 10.1007/s12565-025-00835-4

Buket Oguz, Ferhat Geneci, Mert Ocak, Mehmet Fatih Sentürk, Emine Sebnem Kursun Cakmak, Kaan Orhan, Kadir Desdicioglu

{"title":"Evaluation of semicircular canal dehiscence using micro-computed tomography and comparison with cone-beam computed tomography.","authors":"Buket Oguz, Ferhat Geneci, Mert Ocak, Mehmet Fatih Sentürk, Emine Sebnem Kursun Cakmak, Kaan Orhan, Kadir Desdicioglu","doi":"10.1007/s12565-025-00835-4","DOIUrl":"https://doi.org/10.1007/s12565-025-00835-4","url":null,"abstract":"Semicircular canal dehiscence (SSCD), is a rare bony defect that reveals a third window of semicircular canal except oval and round window. Dizziness, acute vertigo attacks, conductive hearing loss, tinnitus and amplified heartbeat sounds are the symptoms of dehiscence. The aim of this article is to analyze the length and location of semicircular canal dehiscence as superior (anterior), inferior (posterior), or lateral (horizontal) canals using micro-CT and compare it with Cone beam CT. A total of 39 dry temporal bones without visible damage were examined both in Micro CT and Cone beam CT. Measurements were made on these cross-sectional images using the CTAn software. Statistical significance was defined as p < 0.05. When examining Micro-CT images, only 4 canals showed dehiscence among 39 bones. The dehicences were observed in both lateral, superior, and posterior semicircular canals. One dehiscence was in the lateral semicircular canal, two were in the superior semicircular canal, and the last one was in the posterior semicircular canal. In CBCT images, dehiscence was observed in a total of 11 canals among the 39 bones. Two dehiscences were in the lateral semicircular canal, three in the posterior semicircular canal, and six in the superior semicircular canal. There was a significant difference between Micro CT and Cone beam CT in terms of dehiscence detection (p < 0,05). Consequently, this study emphasizes the potential danger of an uncertain diagnosis of canal dehiscence with CT in individuals with minor irregularities in Cone beam CT scans, which could result in potentially inappropriate surgical interventions.","PeriodicalId":7816,"journal":{"name":"Anatomical Science International","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143778924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A unique origin of the brachioradialis muscle from the triceps brachii. 一个独特的起源于肱三头肌的肱桡肌。

IF 1.2 4区医学

Anatomical Science International Pub Date : 2025-03-25 DOI: 10.1007/s12565-025-00833-6

George Triantafyllou, Fabrice Duparc, George Tsakotos, Maria Piagkou

引用次数: 0

Common trunk branching from the renal artery to the diaphragm, adrenal gland, and testis: a case report with embryological hypotheses by observation. 从肾动脉到横膈膜、肾上腺和睾丸的主干分支：一例胚胎学假说的观察报告。

IF 1.2 4区医学

Anatomical Science International Pub Date : 2025-03-07 DOI: 10.1007/s12565-025-00829-2

Yoko Ueda, Wataru Nemoto, Rio Hosoda, Hayato Terayama, Kenta Nagahori, Daisuke Kiyoshima, Zhe-Wu Jin, Takashi Okazaki, Masahito Yamamoto, Kaori Suyama, Shogo Hayashi

{"title":"Common trunk branching from the renal artery to the diaphragm, adrenal gland, and testis: a case report with embryological hypotheses by observation.","authors":"Yoko Ueda, Wataru Nemoto, Rio Hosoda, Hayato Terayama, Kenta Nagahori, Daisuke Kiyoshima, Zhe-Wu Jin, Takashi Okazaki, Masahito Yamamoto, Kaori Suyama, Shogo Hayashi","doi":"10.1007/s12565-025-00829-2","DOIUrl":"https://doi.org/10.1007/s12565-025-00829-2","url":null,"abstract":"The vascular systems of the kidneys and gonads are highly susceptible to variations because of the degeneration of the mesonephros and mesonephric artery and the progressive ascending development of the metanephros. In this report, we present a rare case of a common arterial trunk originating from the left renal artery and supplying the left diaphragm, adrenal gland, and testis. Anatomical dissection of a 95-year-old male was conducted during the 2023 academic year at Tokai University Medical School. The left renal artery had a common trunk that bifurcated to superior and inferior branches, forming a T-shape. The superior branch was distributed in the left adrenal gland and diaphragm, whereas the inferior branch was distributed in the left testis. This anatomical variation likely results from the remnant of the mesonephric artery network structure, particularly the rete arteriosum urogenitale. Understanding such variations is crucial for radiologists and surgeons to avoid potential complications during diagnostic procedures and surgical interventions.","PeriodicalId":7816,"journal":{"name":"Anatomical Science International","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143571511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Histological characterization of the inferior vena cava in cases of duplicated inferior vena cava. 重复下腔静脉病例下腔静脉的组织学特征。

IF 1.2 4区医学

Anatomical Science International Pub Date : 2025-03-06 DOI: 10.1007/s12565-025-00830-9

Shintaro Fujimura, Takuya Omotehara, Shiori Yoshimura, Shinichi Kawata, Masahiro Itoh

{"title":"Histological characterization of the inferior vena cava in cases of duplicated inferior vena cava.","authors":"Shintaro Fujimura, Takuya Omotehara, Shiori Yoshimura, Shinichi Kawata, Masahiro Itoh","doi":"10.1007/s12565-025-00830-9","DOIUrl":"https://doi.org/10.1007/s12565-025-00830-9","url":null,"abstract":"Duplicated inferior vena cava (DIVC) is a congenital anomaly where the inferior vena cava (IVC) is present on either side of the abdominal aorta. Previous studies have noted smaller IVC widths in DIVC cases, but detailed structural characteristics remain unclear. This study aimed to characterize the histological structure of the IVC in DIVC and normal cases. Histological analysis was performed on the IVC just below the liver (IVC-Liver), the IVC at the 4th lumbar vertebra level (IVC-L4), and the external iliac vein (EIV) from donated cadavers. The tissues underwent HE staining and immunohistochemistry to detect elastin and alpha smooth muscle actin, with the cross-sectional area of vessel lumina and immunopositive area calculated. The study found that the combined cross-sectional areas of the right and left IVC-L4 in DIVC cases were smaller than the single IVC-L4 area in normal cases. Histologically, DIVC cases showed a significantly decreased ratio of elastin immunopositive areas, compared to normal cases. This reduction in cross-sectional areas and elastin ratio suggests that IVCs in DIVC cases hold less blood volume and have weaker contractility by elastic fibers after dilation, potentially leading to disrupted blood circulation in the lower body.","PeriodicalId":7816,"journal":{"name":"Anatomical Science International","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0