Hiroyuki Moriyama

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IgG4-related sclerosing disease is a novel clinicopathological entity characterized by fibrosis, extensive infiltration of IgG4-positive plasma cells, and serum IgG4 elevation. This disorder includes a variety of diseases, such as autoimmune pancreatitis, retroperitoneal fibrosis, sialadenitis, thyroiditis, inflammatory abdominal aneurysm,(More)
Lymphoepithelioma-like carcinoma is an undifferentiated carcinoma with histological features similar to undifferentiated, non-keratinizing carcinoma of the nasopharynx. Lymphoepithelioma-like carcinoma of the urinary bladder is uncommon with a reported incidence of 0.3%– 1.3% of all bladder cancer. We report a Japanese case of predominant(More)
Xanthogranulomatous pyelonephritis (XGP) is a rare entity and constitutes less than 1% of chronic pyelonephritis. A 71-year-old male was introduced to our department with general malaise and abnormal findings of computed tomography (CT). Abnormal findings of complete blood count and laboratory examination included an elevated WBC count and C-reactive(More)
Eosinophilic cystitis is a rare inflammatory lesion of the bladder, characterized by massive eosinophilic infiltration of the bladder wall. Its cause is not known definitely. A 49-year-old man consulted our department with a miction pain, gross hematuria, and frequent micturition. Urinalysis showed combined hematuria and pyuria, but urine culture was(More)
We report a case of metachronous bilateral testicular tumors. A 36-year-old man was admitted to our hospital with the chief complaint of painless left scrotal swelling. He had undergone right high orchiectomy for testicular seminoma, stage I, one year earlier. This time, ultrasonography demonstrated two hypoechoic mass and microlithiasis of the left testis.(More)
Emphysematous cystitis is a rare clinically entity, more commonly seen in diabetic, immunocompromised patients, which was characterized by air within the bladder wall and lumen. A 83-year-old woman was introduced to our department with fever elevation and abnormal findings of computed tomography (CT). She took orally prednisolone for autoimmune hepatitis.(More)
The patient was a 73-year-old man who visited our hospital with asymptomatic gross hematuria. Cystoscopy revealed a bladder tumor in two places. Serum prostatic specific antigen was normal (2.535 ng/ml). Transurethral resection of bladder tumors was performed. In order to complete resection of bladder tumor, transurethral resection of right lobe of the(More)
Clear cell variant of invasive urothelial carcinoma is an extremely rare tumor. Here, we report a case of clear cell variant of invasive urothelial carcinoma of the ureter. A 59-year-old man, who complained of gross hematuria was referred to our hospital for precise examination and treatment. Computerized tomographic scanning confirmed the presence of a(More)
We report a case of micropapillary variant of urothelial carcinoma in the ureter. A 62-year-old man was referred to our hospital under the diagnosis of left ureteral cancer. We performed retroperitoneoscopic nephroureterectomy. Histological examination of the resected specimen revealed a micropapillary variant of urothelial carcinoma of the ureter. In this(More)
INTRODUCTION Amyloidosis is characterized by extracellular deposition of abnormal insoluble fibrils, which cause structural and functional disorders. Amyloidosis is classified into primary and secondary disease. We report a case of localized amyloidosis of the urinary bladder. In the English literature, this is the first case effectively treated with(More)