IJU Case Reports最新文献

Primary Prostatic Diffuse Large B-Cell Lymphoma Mimicking Prostate Cancer With a Normal Prostate-Specific Antigen Level 前列腺特异性抗原水平正常的原发性前列腺弥漫性大b细胞淋巴瘤模拟前列腺癌

IF 0.5

IJU Case Reports Pub Date : 2026-10-26 DOI: 10.1002/iju5.70286

Kota Amamoto, Yuichiro Nakamura, Hajime Fukushima, Junki Harada, Tsuyoshi Matsuda, Itsuho Ito, Kensuke Mitsunari, Tomohiro Matsuo, Kojiro Ohba, Ryoichi Imamura

{"title":"Primary Prostatic Diffuse Large B-Cell Lymphoma Mimicking Prostate Cancer With a Normal Prostate-Specific Antigen Level","authors":"Kota Amamoto, Yuichiro Nakamura, Hajime Fukushima, Junki Harada, Tsuyoshi Matsuda, Itsuho Ito, Kensuke Mitsunari, Tomohiro Matsuo, Kojiro Ohba, Ryoichi Imamura","doi":"10.1002/iju5.70286","DOIUrl":"https://doi.org/10.1002/iju5.70286","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Introduction</h3>\u0000 \u0000 <p>Primary prostatic lymphoma is rare and may mimic prostate cancer clinically and radiologically.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Case Presentation</h3>\u0000 \u0000 <p>A 66-year-old man was referred for evaluation of suspected advanced prostate cancer. Despite a normal prostate-specific antigen level of 0.573 ng/mL, imaging revealed a prostatic mass with suspected bladder invasion and bilateral hydronephrosis. Prostate needle biopsy showed atypical lymphocytic infiltration but could not distinguish lymphoma from inflammatory changes. Additional transurethral biopsy provided sufficient tissue for histopathological and immunohistochemical evaluation, establishing a diagnosis of primary prostatic diffuse large B-cell lymphoma.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Primary prostatic lymphoma should be considered when clinical and imaging findings suggest prostate cancer despite a normal prostate-specific antigen level. Additional tissue sampling should be considered when needle biopsy is inconclusive despite persistent clinical suspicion of lymphoma.</p>\u0000 </section>\u0000 </div>","PeriodicalId":52909,"journal":{"name":"IJU Case Reports","volume":"9 6","pages":""},"PeriodicalIF":0.5,"publicationDate":"2026-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/iju5.70286","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149259427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spontaneous Renal Hemorrhage Secondary to MRSA Renal Abscess Requiring Nephrectomy After Failed Percutaneous Drainage: A Case Report MRSA肾脓肿继发自发性肾出血，经皮引流失败后需行肾切除术1例报告。

IF 0.5

IJU Case Reports Pub Date : 2026-10-21 DOI: 10.1002/iju5.70285

Yuichiro Atagi, Kyotaro Fukuta, Keisuke Ozaki, Takeshi Nakashima, Ryoichi Nakanishi, Toru Inai, Hirofumi Izaki

{"title":"Spontaneous Renal Hemorrhage Secondary to MRSA Renal Abscess Requiring Nephrectomy After Failed Percutaneous Drainage: A Case Report","authors":"Yuichiro Atagi, Kyotaro Fukuta, Keisuke Ozaki, Takeshi Nakashima, Ryoichi Nakanishi, Toru Inai, Hirofumi Izaki","doi":"10.1002/iju5.70285","DOIUrl":"10.1002/iju5.70285","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Introduction</h3>\u0000 \u0000 <p>Spontaneous renal hemorrhage (SRH) caused by renal infection is extremely rare. Furthermore, sepsis caused by methicillin-resistant <i>Staphylococcus aureus</i> (MRSA) has a high mortality rate and requires prompt source control.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Case Presentation</h3>\u0000 \u0000 <p>A 63-year-old man with severe diabetes presented to the emergency department in shock. Computed tomography revealed a left renal subcapsular hematoma. Based on his clinical course and history, infection-induced SRH was suspected. Blood and urine cultures yielded MRSA. Although percutaneous drainage was performed after the initial bleeding stabilized, persistent infection was followed by rebleeding, necessitating left nephrectomy. The patient recovered postoperatively. Histopathology confirmed abscess formation and chronic inflammation without malignancy.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>For inadequately controlled infections following percutaneous drainage, particularly when recurrent hemorrhage is suspected, early nephrectomy may be considered for definitive source control.</p>\u0000 </section>\u0000 </div>","PeriodicalId":52909,"journal":{"name":"IJU Case Reports","volume":"9 6","pages":""},"PeriodicalIF":0.5,"publicationDate":"2026-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13685666/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149247450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recurrent TFE3-Rearranged Renal Cell Carcinoma Responding to Pembrolizumab Plus Lenvatinib After Postoperative Pembrolizumab: A Case Report 复发性tfe3重排肾细胞癌对术后派姆单抗联合Lenvatinib有反应：1例报告

IF 0.5

IJU Case Reports Pub Date : 2026-10-19 DOI: 10.1002/iju5.70280

Masashi Fujimoto, Tomoyasu Sano, Yuta Sano, Satoshi Inoue, Kazuna Matsuo, Tomokazu Kimura, Shohei Ishida, Kenji Zennami, Yoshihisa Matsukawa, Shusuke Akamatsu

{"title":"Recurrent TFE3-Rearranged Renal Cell Carcinoma Responding to Pembrolizumab Plus Lenvatinib After Postoperative Pembrolizumab: A Case Report","authors":"Masashi Fujimoto, Tomoyasu Sano, Yuta Sano, Satoshi Inoue, Kazuna Matsuo, Tomokazu Kimura, Shohei Ishida, Kenji Zennami, Yoshihisa Matsukawa, Shusuke Akamatsu","doi":"10.1002/iju5.70280","DOIUrl":"10.1002/iju5.70280","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Introduction</h3>\u0000 \u0000 <p>TFE3-rearranged renal cell carcinoma (RCC) is rare, and evidence guiding systemic therapy is limited.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Case Presentation</h3>\u0000 \u0000 <p>A 25-year-old man with gross hematuria had a left renal tumor with hilar lymph node metastasis. Robot-assisted radical nephrectomy and hilar lymph node dissection were performed. Histology, immunohistochemistry, and fluorescence in situ hybridization confirmed TFE3-rearranged RCC, pT3aN1. Postoperative pembrolizumab was started because of the high risk of recurrence. Eight months after surgery, lung and retroperitoneal metastases developed. Lenvatinib was added to ongoing pembrolizumab. The metastatic lesions decreased within one month, and a partial response according to Response Evaluation Criteria in Solid Tumors has been maintained for ten months.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>This case suggests that adding a vascular endothelial growth factor receptor tyrosine kinase inhibitor to pembrolizumab may be a therapeutic option for recurrent TFE3-rearranged RCC, although longer follow-up and molecular characterization are needed.</p>\u0000 </section>\u0000 </div>","PeriodicalId":52909,"journal":{"name":"IJU Case Reports","volume":"9 6","pages":""},"PeriodicalIF":0.5,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13680108/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149229187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Primary Pure Yolk Sac Tumor of the Urinary Bladder: A Case Report 原发性纯卵黄囊膀胱肿瘤1例报告

IF 0.5

IJU Case Reports Pub Date : 2026-10-15 DOI: 10.1002/iju5.70282

Yuki Hashimoto, Kosuke Shimizu, Masayuki Uegaki, Fumihiko Kono, Toru Yoshida

{"title":"Primary Pure Yolk Sac Tumor of the Urinary Bladder: A Case Report","authors":"Yuki Hashimoto, Kosuke Shimizu, Masayuki Uegaki, Fumihiko Kono, Toru Yoshida","doi":"10.1002/iju5.70282","DOIUrl":"https://doi.org/10.1002/iju5.70282","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Introduction</h3>\u0000 \u0000 <p>Yolk sac tumors are malignant germ cell tumors that typically arise in the gonads. Although extragonadal cases have been reported, primary involvement of the urinary tract is extremely rare.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Case Presentation</h3>\u0000 \u0000 <p>A 67-year-old man presented with gross hematuria. Cystoscopy and contrast-enhanced computed tomography revealed a 6-cm bladder mass. Transurethral resection of the bladder tumor was performed. Histopathological and immunohistochemical findings (alpha-fetoprotein, glypican-3, and Sal-like protein 4 positivity) were consistent with a yolk sac tumor without a urothelial carcinoma component. Additional examinations revealed no primary lesions elsewhere, leading to the diagnosis of a primary bladder yolk sac tumor. The patient received four cycles of etoposide and cisplatin chemotherapy and has remained recurrence-free for 2 years.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Patients with primary bladder yolk sac tumors, although rare, may achieve favorable outcomes with combined surgical resection and chemotherapy.</p>\u0000 </section>\u0000 </div>","PeriodicalId":52909,"journal":{"name":"IJU Case Reports","volume":"9 6","pages":""},"PeriodicalIF":0.5,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/iju5.70282","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149205754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Renal Abscess Secondary to Urinary Tract Obstruction Caused by Pelvic Organ Prolapse: A Report of Two Cases 盆腔器官脱垂致泌尿道梗阻继发肾脓肿2例报告

IF 0.5

IJU Case Reports Pub Date : 2026-10-15 DOI: 10.1002/iju5.70284

Hiroki Sai, Kumiko Kato, Atsushi Kiyota, Yukiko Tsunoda, Masashi Kato

{"title":"Renal Abscess Secondary to Urinary Tract Obstruction Caused by Pelvic Organ Prolapse: A Report of Two Cases","authors":"Hiroki Sai, Kumiko Kato, Atsushi Kiyota, Yukiko Tsunoda, Masashi Kato","doi":"10.1002/iju5.70284","DOIUrl":"https://doi.org/10.1002/iju5.70284","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Introduction</h3>\u0000 \u0000 <p>Pelvic organ prolapse can cause urinary tract obstruction, leading to hydronephrosis, pyelonephritis, and in rare cases, renal abscess.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Case Presentation</h3>\u0000 \u0000 <p>We report two elderly women with advanced pelvic organ prolapse who developed renal abscesses. Both presented with pyelonephritis and acute renal impairment accompanied by bilateral hydronephrosis. Imaging demonstrated poorly enhanced renal lesions consistent with renal abscess. Infection was successfully controlled with antimicrobial therapy, followed by surgical correction. Renal function improved, and no recurrence was observed during follow-up.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Advanced pelvic organ prolapse can cause severe urinary tract obstruction, leading to pyelonephritis and, in rare cases, renal abscess. Early recognition of advanced pelvic organ prolapse and urinary dysfunction, prompt infection control, and timely surgical management are essential to prevent serious complications.</p>\u0000 </section>\u0000 </div>","PeriodicalId":52909,"journal":{"name":"IJU Case Reports","volume":"9 6","pages":""},"PeriodicalIF":0.5,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/iju5.70284","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149205691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simultaneous Robot-Assisted Distal Gastrectomy and Radical Cystectomy With a Shared Port Configuration in Situs Inversus Totalis 同步机器人辅助远端胃切除术和根治性膀胱切除术，在对位和全位共享端口配置

IF 0.5

IJU Case Reports Pub Date : 2026-10-14 DOI: 10.1002/iju5.70281

Takaharu Hamada, Shugo Yajima, Shota Umezawa, Gaku Okumura, Tomoki Kimura, Shu Gozu, Madoka Kataoka, Yasukazu Nakanishi, Takahiro Kinoshita, Hitoshi Masuda

{"title":"Simultaneous Robot-Assisted Distal Gastrectomy and Radical Cystectomy With a Shared Port Configuration in Situs Inversus Totalis","authors":"Takaharu Hamada, Shugo Yajima, Shota Umezawa, Gaku Okumura, Tomoki Kimura, Shu Gozu, Madoka Kataoka, Yasukazu Nakanishi, Takahiro Kinoshita, Hitoshi Masuda","doi":"10.1002/iju5.70281","DOIUrl":"https://doi.org/10.1002/iju5.70281","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Introduction</h3>\u0000 \u0000 <p>Situs inversus totalis complicates minimally invasive surgery, and simultaneous robotic surgery for tumors of different organs is particularly challenging.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Case Presentation</h3>\u0000 \u0000 <p>A 72-year-old man with situs inversus totalis receiving androgen blockade for prostate cancer developed a 40-mm muscle-invasive bladder tumor undetected on magnetic resonance imaging 7 months earlier; synchronous gastric cancer was also diagnosed. After four chemotherapy cycles, robot-assisted distal gastrectomy and radical cystectomy with an ileal conduit were performed in one session, sharing four of eight ports and lasting 10 h 27 min. The bladder showed no residual carcinoma (ypT0N0) and the gastric cancer ypT2N3aM0; he died 27 months postoperatively.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Two major robotic resections were completed in one session, to our knowledge for the first time. Port sharing avoided a second set of incisions and a second port map, although the robot was undocked and redocked. The surgery was prolonged and followed by suspected non-occlusive mesenteric ischemia.</p>\u0000 </section>\u0000 </div>","PeriodicalId":52909,"journal":{"name":"IJU Case Reports","volume":"9 6","pages":""},"PeriodicalIF":0.5,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/iju5.70281","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149205663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Gracilis Muscle Flap Reconstruction for Refractory Urethral Complications After Pelvic Surgery: A Report of Two Cases 股薄肌瓣重建盆腔术后难治性尿道并发症2例报告

IF 0.5

IJU Case Reports Pub Date : 2026-10-14 DOI: 10.1002/iju5.70283

Akihiro Maeda, Shohei Tobu, Minika Yukimoto, Shuhei Kusano, Maki Kawasaki, Hiroaki Kakinoki, Mitsuru Noguchi

{"title":"Gracilis Muscle Flap Reconstruction for Refractory Urethral Complications After Pelvic Surgery: A Report of Two Cases","authors":"Akihiro Maeda, Shohei Tobu, Minika Yukimoto, Shuhei Kusano, Maki Kawasaki, Hiroaki Kakinoki, Mitsuru Noguchi","doi":"10.1002/iju5.70283","DOIUrl":"https://doi.org/10.1002/iju5.70283","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Introduction</h3>\u0000 \u0000 <p>Iatrogenic urethral injury and rectourethral fistula are rare and challenging complications of pelvic surgery.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Case Presentation</h3>\u0000 \u0000 <p>Case 1 involved a 72-year-old man with persistent urinary leakage after primary repair of a prostatic urethral injury sustained during rectal cancer surgery following neoadjuvant chemoradiotherapy. Approximately 2 years later, reclosure of the urethral defect with local periurethral reinforcement and gracilis muscle flap coverage enabled catheter removal and spontaneous voiding. Case 2 involved a 62-year-old man who developed a rectourethral fistula after robot-assisted radical prostatectomy. After conservative management failed, fistulectomy, rectal and urinary tract repair, and gracilis muscle flap interposition achieved fistula closure and subsequent colostomy reversal.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>These cases illustrate two distinct reconstructive roles of the gracilis muscle flap: vascularized reinforcement of a compromised urethral repair and interposition between repaired urinary and rectal sites.</p>\u0000 </section>\u0000 </div>","PeriodicalId":52909,"journal":{"name":"IJU Case Reports","volume":"9 6","pages":""},"PeriodicalIF":0.5,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/iju5.70283","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149205662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Renal Neuroendocrine Tumor Mimicking Upper Tract Urothelial Carcinoma 肾神经内分泌肿瘤模拟上尿路上皮癌。

IF 0.5

IJU Case Reports Pub Date : 2026-10-13 DOI: 10.1002/iju5.70253

Jia-Yuh Sheu, Yun-Sheng Wu, Jeff S. Chueh

{"title":"Renal Neuroendocrine Tumor Mimicking Upper Tract Urothelial Carcinoma","authors":"Jia-Yuh Sheu, Yun-Sheng Wu, Jeff S. Chueh","doi":"10.1002/iju5.70253","DOIUrl":"10.1002/iju5.70253","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Introduction</h3>\u0000 \u0000 <p>Renal pelvic or peripelvic neuroendocrine tumors are rare and may radiologically mimic invasive upper tract urothelial carcinoma.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Case Presentation</h3>\u0000 \u0000 <p>A man in his 70s presented with two episodes of painless gross hematuria and lower urinary tract symptoms from benign prostatic hyperplasia. Computed tomography urography and magnetic resonance imaging showed a 3.1-cm enhancing mass centered at the right renal pelvis with apparent cortical invasion. However, flexible ureterorenoscopy showed intact urothelium, and renal pelvic wash cytology was negative. Upper tract urothelial carcinoma with parenchymal invasion was suspected, and single-port robot-assisted right nephroureterectomy with bladder cuff excision was performed. Histology revealed a well-circumscribed, well-differentiated neuroendocrine tumor beneath intact renal pelvic mucosa, with negative margins and a Ki-67 index of 4.9%. Ten-month postoperative imaging showed no recurrence or metastasis.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Submucosal renal neuroendocrine tumors should be considered when imaging suggests a renal pelvic mass but endoscopy shows no mucosal lesion.</p>\u0000 </section>\u0000 </div>","PeriodicalId":52909,"journal":{"name":"IJU Case Reports","volume":"9 6","pages":""},"PeriodicalIF":0.5,"publicationDate":"2026-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13659640/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149186082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spontaneous Rupture of a Small Chromophobe Renal Cell Carcinoma Presenting as Wunderlich Syndrome 以Wunderlich综合征表现的小嫌色性肾细胞癌的自发破裂

IF 0.5

IJU Case Reports Pub Date : 2026-10-08 DOI: 10.1002/iju5.70272

Naoki Kamimura, Ryohei Yamamoto, Yuya Sekine, Hiromi Sato, Mizuki Kobayashi, Mitsuru Saito, Shintaro Narita, Tomonori Habuchi

{"title":"Spontaneous Rupture of a Small Chromophobe Renal Cell Carcinoma Presenting as Wunderlich Syndrome","authors":"Naoki Kamimura, Ryohei Yamamoto, Yuya Sekine, Hiromi Sato, Mizuki Kobayashi, Mitsuru Saito, Shintaro Narita, Tomonori Habuchi","doi":"10.1002/iju5.70272","DOIUrl":"https://doi.org/10.1002/iju5.70272","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Introduction</h3>\u0000 \u0000 <p>Chromophobe renal cell carcinoma rarely causes spontaneous renal hemorrhage and enhances weakly on computed tomography. We report a case in which the tumor was masked by a perirenal hematoma for 11 months.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Case Presentation</h3>\u0000 \u0000 <p>A 46-year-old woman presented with spontaneous renal hemorrhage and no visible renal mass. Magnetic resonance imaging (MRI) at 6 months showed an enhancing lesion indistinguishable from organizing hematoma; because it was shrinking with the hematoma, observation was continued. At 11 months, the hematoma had resolved and a 25-mm solid mass remained. Partial nephrectomy revealed pT1a chromophobe renal cell carcinoma without necrosis or sarcomatoid differentiation. She remained recurrence-free at 5 years.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>This case demonstrates spontaneous rupture of a small tumor without aggressive pathological features. When the cause of spontaneous renal hemorrhage remains unclear, serial imaging should be considered until hematoma resolution to avoid missing an occult malignancy.</p>\u0000 </section>\u0000 </div>","PeriodicalId":52909,"journal":{"name":"IJU Case Reports","volume":"9 6","pages":""},"PeriodicalIF":0.5,"publicationDate":"2026-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/iju5.70272","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149146269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Leiomyosarcoma of the Renal Vein That Enlarged Laterally While Preserving the Structure of the Renal Vein Lumen 肾静脉平滑肌肉瘤在保持肾静脉管腔结构的同时向外侧扩张。

IF 0.5

IJU Case Reports Pub Date : 2026-10-07 DOI: 10.1002/iju5.70273

Naoki Tashiro, Yume Sakaki, Akito Fujinaga, Takahiro Nagai, Chie Onizuka, Shoichiro Mukai, Yoshiko Umekita, Yuichiro Sato, Toshiyuki Kamoto, Atsuro Sawada

{"title":"Leiomyosarcoma of the Renal Vein That Enlarged Laterally While Preserving the Structure of the Renal Vein Lumen","authors":"Naoki Tashiro, Yume Sakaki, Akito Fujinaga, Takahiro Nagai, Chie Onizuka, Shoichiro Mukai, Yoshiko Umekita, Yuichiro Sato, Toshiyuki Kamoto, Atsuro Sawada","doi":"10.1002/iju5.70273","DOIUrl":"10.1002/iju5.70273","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Introduction</h3>\u0000 \u0000 <p>Primary renal vein leiomyosarcoma is an extremely rare disease and the tumor often infiltrates the vessel wall. We report a case of primary renal vein leiomyosarcoma that enlarged while preserving the structure of the renal vein lumen.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Case Presentation</h3>\u0000 \u0000 <p>A 64-year-old woman underwent a computed tomography scan, which revealed a left renal hilar mass. Extra-gastrointestinal stromal tumor, leiomyosarcoma, and inflammatory myofibroblastic tumor remained in the differential diagnoses based on blood, urine, and imaging test findings. The tumor, left renal vein, kidney, and adrenal gland were resected. Hematoxylin–eosin staining revealed a tumor arising from the renal vein wall and proliferating outward beyond the vessel. The diagnosis was primary renal vein leiomyosarcoma.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>When a well-defined solid tumor adjacent to the renal vein is identified, leiomyosarcoma should be considered in the differential diagnosis, and complete resection of the tumor should be pursued.</p>\u0000 </section>\u0000 </div>","PeriodicalId":52909,"journal":{"name":"IJU Case Reports","volume":"9 6","pages":""},"PeriodicalIF":0.5,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13643366/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149139148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0