Yuki Hashimoto, Kosuke Shimizu, Kodai Hattahara, Masayuki Uegaki, Toru Yoshida
{"title":"[A Case of Testicular Epidermoid Cyst Treated by Tumor Enucleation].","authors":"Yuki Hashimoto, Kosuke Shimizu, Kodai Hattahara, Masayuki Uegaki, Toru Yoshida","doi":"10.82687/actaurojp.72.2_79","DOIUrl":"10.82687/actaurojp.72.2_79","url":null,"abstract":"<p><p>Testicular epidermoid cysts are relatively rare benign testicular tumors that are primarily observed in young adults. Most testicular tumors in adults tend to be malignant, and high inguinal orchiectomy is often performed to treat testicular epidermoid cysts. However, accurate preoperative and intraoperative diagnoses can make testis-sparing surgery a viable option. A 25-year-old man presented with a painless mass in the right scrotum. Ultrasonography revealed a hypoechoic lesion with an echogenic rim and an onion ring sign. Magnetic resonance imaging showed the target sign in the right testis. These imaging findings are considered to be highly specific to testicular epidermoid cysts. Intraoperative rapid testicular frozen sections were also useful for performing testis-sparing surgery. For this patient, an accurate preoperative diagnosis and intraoperative pathological examination enabled testis-sparing surgery.</p>","PeriodicalId":39291,"journal":{"name":"Acta Urologica Japonica","volume":"72 2","pages":"79-82"},"PeriodicalIF":0.0,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147575781","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}
Hiromasa Araki, Takuro Miyagawa, Seiji Moroi, Go Kobori
{"title":"[A Case of Pelvic Organ Prolapse Treated with Laparoscopic Sacrocolpopexy and Bladder Diverticulectomy at the Same Time].","authors":"Hiromasa Araki, Takuro Miyagawa, Seiji Moroi, Go Kobori","doi":"10.82687/actaurojp.72.1_7","DOIUrl":"10.82687/actaurojp.72.1_7","url":null,"abstract":"<p><p>We report a case of bladder diverticulum accompanied by pelvic organ prolapse treated with laparoscopic sacrocolpopexy and bladder diverticulectomy at the same time. A literature search showed this is the first report of simultaneous laparoscopic bladder diverticulectomy and sacrocolpopexy. A 63-year-old woman was referred to our department for voiding dysfunction and incomplete bladder emptying. She had a POP-Q stage III cystocele. Magnetic resonance imaging showed a large bladder diverticulum. Laparoscopic sacrocolpopexy and bladder diverticulectomy were performed at the same time. After the operation, the symptoms improved and residual urine decreased. There has been no mesh infection and no recurrence of cystocele.</p>","PeriodicalId":39291,"journal":{"name":"Acta Urologica Japonica","volume":"72 1","pages":"7-10"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147575820","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}
{"title":"[A Case of Asymptomatic Paraganglioma of the Bladder].","authors":"Taito Sato, Naoki Hayata, Takuya Hida, Takayoshi Miura, Mutsuki Mishina, Takuya Kitamura, Kazutaka Nanba, Hiroya Kojima, Gen Nishikawa, Ryo Kuwahara, Seiko Kasahara, Koki Moriyoshi, Toru Kanno","doi":"10.82687/actaurojp.72.1_1","DOIUrl":"10.82687/actaurojp.72.1_1","url":null,"abstract":"<p><p>Bladder paraganglioma is an extremelyrare tumor, accounting for 0.7% of all paragangliomas and less than 0. 05% of all bladder tumors. While often discovered due to catecholamine-related symptoms or urinary symptoms, preoperative diagnosis in asymptomatic cases is difficult but crucial to avoid intraoperative hypertensive crises. Here, we report a case of asymptomatic paraganglioma of the bladder that was incidentallydiscovered. An 82-year-old woman was referred for evaluation of an incidental bladder tumor. Contrast-enhanced CT and cystoscopy revealed a submucosal tumor in the posterior bladder wall. MRI showed a high signal on T2-weighted imaging and earlyarterial enhancement on fat-suppressed T1-weighted imaging. Endocrinological studies revealed no obvious catecholamine excess, but ¹²³I-MIBG scintigraphy confirmed uptake in the bladder tumor, leading to a preoperative diagnosis of bladder paraganglioma. After preoperative management with an alpha-blocker (doxazosin), laparoscopic partial cystectomyand sigmoid colectomywere performed simultaneously. During tumor resection, the patient's systolic blood pressure rose to 220 mmHg temporarilybut was well controlled, and the surgerywas completed safely. Pathology confirmed bladder paraganglioma. The postoperative course was uneventful, and no recurrence has been observed 13 months after surgery. Even in asymptomatic bladder tumors, bladder paraganglioma should be considered. Appropriate imaging and endocrine evaluation are essential for a safe and effective treatment strategy.</p>","PeriodicalId":39291,"journal":{"name":"Acta Urologica Japonica","volume":"72 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147575840","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}
{"title":"[Normal Delivery by Intracytoplasmic Sperm Injection with Epididymal Sperm in a Patient with Azoospermia and Kartagener Syndrome].","authors":"Toshiyasu Amano, Yuki Matsumoto, Akitaka Aoki, Tetsuya Imao, Ai Kusaba, Shota Miyashita, Chizue Nishizawa, Hirohisa Fujita","doi":"10.82687/actaurojp.72.1_11","DOIUrl":"10.82687/actaurojp.72.1_11","url":null,"abstract":"<p><p>Kartagener syndrome is defined as a primary ciliary dyskinesia with visceral inversion, bronchiectasis, and chronic sinusitis. Male patients with primary ciliary dyskinesia including Kartagener syndrome are also associated with male infertility, mainly because of sperm tail immobility. We report a case in a 36-year-old man with Kartagener syndrome and azoospermia. An examination indicated obstructive azoospermia. Therefore, testicular sperm extraction and microsurgical epididymal sperm aspiration were performed, and sperm retrieval was successful. Motile epididymal spermatozoa were used for the first intracytoplasmic sperm injection, and a single embryo was transferred. The course of pregnancy was uneventful and a healthy boy was delivered. Intracytoplasmic sperm injection following microsurgical epididymal sperm aspiration is an effective treatment for infertility due to Kartagener syndrome.</p>","PeriodicalId":39291,"journal":{"name":"Acta Urologica Japonica","volume":"72 1","pages":"11-14"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147575788","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}
{"title":"[Evaluation of Imaging Examination and Urine Cytology before Laparoscopic Radical Nephroureterectomy and Four Cases with Benign Postoperative Pathological Findings].","authors":"Toshifumi Takahashi, Kouhei Maruno, Ryota Nakayasu, Yuya Yamada, Masakazu Nakashima, Kazuro Kikkawa, Masahiro Tamaki, Noriyuki Ito","doi":"10.14989/ActaUrolJap_71_12_409","DOIUrl":"10.14989/ActaUrolJap_71_12_409","url":null,"abstract":"<p><p>Diagnosis of upper urinary tract urothelial carcinoma (UTUC), based on imaging findings and urine cytology is often difficult. In this study, we have evaluated the preoperative imaging findings, voided urine cytology, and selective urine cytology in patients with suspected UTUC, who underwent laparoscopic radical nephroureterectomy (LRN). Cases of benign postoperative pathological findings are also reported. Among the 195 patients who underwent LRN between October 2010 and November 2023, 182 patients were included in this study. Simultaneous radical cystectomies and malignant tumors other than urothelial carcinoma were excluded. Most of the cases (137 cases (75.3%)) were classified as class III or less, based on voided urine cytology and 88 cases (48.4%) were classified as class IV or more based on either voided urine cytology or selective urine cytology. Ureteroscopy was performed in 40 cases (22.0%). The four patients who had undergone LRN without malignant findings had not undergone ureteroscopy. Pathological findings indicated normal urothelium in two patients, inflammatory scar in one patient, and amyloidosis in one patient. Accurate preoperative diagnosis requires pathological examinations such as natural urine cytology and selective urine cytology, computed tomographic urography, retrograde pyelography, and ureteroscopy if necessary.</p>","PeriodicalId":39291,"journal":{"name":"Acta Urologica Japonica","volume":"71 12","pages":"409-417"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145901315","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}
{"title":"[A Case of Renal Cell Carcinoma with Small Bowel Metastasis Accompanied by Invagination].","authors":"Ryo Yamamoto, Yuu Tashiro, Kyohei Sugiyama, Keiyu Matsumoto, Kazunari Tsuchihashi, Satoshi Ishitoya, Osamu Ogawa","doi":"10.14989/ActaUrolJap_71_12_419","DOIUrl":"https://doi.org/10.14989/ActaUrolJap_71_12_419","url":null,"abstract":"<p><p>We report a case of small bowel metastasis from renal cell carcinoma (RCC) in a woman in her 70s. In 20XX, she underwent a laparoscopic left nephrectomy for left-sided RCC (pT3bN0M0). Three and a half years later, she presented to the emergency department with recurrent vomiting. Contrast-enhanced computed tomography (CT) revealed a suspected small bowel tumor with intussusception and associated lymphadenopathy. Laparoscopic partial resection of the small intestine was performed, and pathological examination confirmed metastatic RCC in both the small bowel and regional lymph nodes. One month later, positron emission tomography-computed tomography (PET-CT) showed increased uptake in the mesenteric lymph nodes, suggesting residual disease. As a result, systemic therapy with ipilimumab and nivolumab was initiated. After four cycles of treatment, follow-up imaging demonstrated complete resolution of the residual lesions. Isolated small bowel metastasis from RCC, which was observed in this case, is relatively rare.</p>","PeriodicalId":39291,"journal":{"name":"Acta Urologica Japonica","volume":"71 12","pages":"419-423"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145901279","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}
{"title":"[A Case Report of a Pregnant Woman who Had Urethral Avulsion during Vacuum Extraction Delivery and Ipsilateral Kidney].","authors":"Chisato Narita, Takashi Otsuka, Hirotaka Suzuki, Yuichi Hasegawa, Takahiro Kimura","doi":"10.14989/ActaUrolJap_71_12_429","DOIUrl":"https://doi.org/10.14989/ActaUrolJap_71_12_429","url":null,"abstract":"<p><p>The incidence of lower urinary tract injuries associated with vaginal delivery is 0.03-0.05%, and reports of urethral injuries related to vacuum delivery are also extremely uncommon. We report a case of urethral injury in a 29-year-old woman during her first pregnancy and delivery due to vacuum extraction. The urethral injury occurred in continuity with a vaginal laceration on the opposite side of the midline episiotomy. A cystoscopy performed after urethral repair did not reveal the left ureteral orifice. Further examination revealed that the left kidney was not identifiable on ultrasound, and no accumulation was observed on DMSA renal scan. Cystoscopy revealed an irregular image of the left anterior vaginal wall, suggesting the presence of a Gartner's duct cyst, while vaginal contrast imaging showed a ureter-like luminal structure emerging from the left vaginal wall. These findings raised the possibility that the ureter from the left kidney opened into the Gartner's duct cyst, rendering it non-functional and that the weakness of the vaginal wall due to the Gartner cyst contributed to the urethral injury.</p>","PeriodicalId":39291,"journal":{"name":"Acta Urologica Japonica","volume":"71 12","pages":"429-432"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145901303","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}
Mao Saito, Narihiko Kakoi, Miyuki Izumi, Hiroshi Aoki
{"title":"[A Case of Verrucous Carcinoma of the Bladder in a Patient with Cerebral Palsy].","authors":"Mao Saito, Narihiko Kakoi, Miyuki Izumi, Hiroshi Aoki","doi":"10.14989/ActaUrolJap_71_12_425","DOIUrl":"https://doi.org/10.14989/ActaUrolJap_71_12_425","url":null,"abstract":"<p><p>A 50-year-old man with cerebral palsy presented to our department complaining of pollakiuria and macrohematuria. Although urinary cytology revealed no positive findings, computed tomography (CT) showed muscle-invasive bladder carcinoma and right intrapelvic lymphadenopathy (cT3bN1M0). Cystoscopy revealed a large non-papillary bladder tumor. Radical cystectomy and urinary diversion were performed. Verrucous carcinoma (VC) of the bladder without intrapelvic lymph node metastasis (pT3bN0) was diagnosed histopathologically. VC is often locally invasive and is a non-metastasising well-differentiated variant of squamous cell carcinoma. Patients with cerebral palsy have a high incidence of urinary incontinence, dysuria, and urinary tract infections. VC of the bladder is associated with chronic bladder irritation due to various causes, including chronic cystitis, dysuria, and bladder stones. VC is frequently detected as locally invasive disease of stage T3 or higher ; the only effective treatment is radical cystectomy. Therefore, early detection and surgery are necessary to improve prognosis. Clinical evaluation, including urodynamic studies, is recommended for patients with cerebral palsy, and in cases of persistent pollakiuria, dysuria, and macrohematuria, abdominal CT and cystoscopy should be considered for the early detection of squamous cell carcinoma and VC of the bladder.</p>","PeriodicalId":39291,"journal":{"name":"Acta Urologica Japonica","volume":"71 12","pages":"425-428"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145901296","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}
{"title":"[A Case of Recurrent Localized Amyloidosis of the Bladder Treated with Dymethyl Sulfoxide (DMSO) Occlusive Dressing Technique].","authors":"Hideto Ota, Rikuri Someya, Naoki Kohei","doi":"10.14989/ActaUrolJap_71_11_399","DOIUrl":"10.14989/ActaUrolJap_71_11_399","url":null,"abstract":"<p><p>The patient was a 53-year-old female. She came to our department with a chief complaint of gross hematuria. A bladder tumor was found, and a diagnosis of amyloidosis was made by transurethral resection of bladder tumor. She had a history of bladder-limited amyloidosis and was diagnosed with recurrent localized amyloidosis of the bladder, and was treated with dymethyl sulfoxide occlusive dressing technique, which was effective.</p>","PeriodicalId":39291,"journal":{"name":"Acta Urologica Japonica","volume":"71 11","pages":"399-403"},"PeriodicalIF":0.0,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145662265","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}
{"title":"[A Case of Bladder Squamous Cell Carcinoma Following LONG-Term-Indwelling Cystostomy].","authors":"Hirohisa Yano, Hiromasa Sakamoto, Masafumi Tsuruta, Daichi Akiba, Sadatoshi Tsuzuki, Teruyoshi Aoyama","doi":"10.14989/ActaUrolJap_71_11_387","DOIUrl":"https://doi.org/10.14989/ActaUrolJap_71_11_387","url":null,"abstract":"<p><p>A man in his 50s with an intellectual disability underwent a cystostomy for neurogenic bladder, followed by regular catheter exchange. Eighteen years later, the patient developed hematuria. Computed tomography and cystoscopy revealed a bladder tumor despite negative urinary cytology. Transurethral resection of the tumor confirmed the diagnosis of squamous cell carcinoma. Radical cystectomy was performed due to muscle invasion. Histopathological analysis revealed a pT3aN1M0 squamous cell carcinoma. No adjuvant therapy was administered, and the patient has remained recurrence-free for seven years postoperatively.</p>","PeriodicalId":39291,"journal":{"name":"Acta Urologica Japonica","volume":"71 11","pages":"387-391"},"PeriodicalIF":0.0,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145662270","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}