Sarcoidosis of the ureter.

We report a rare case of sarcoidosis of the ureter in a 65-year-old Japanese man. Left nephroureterectomy and regional lymph node dissection were performed under the clinical diagnosis of transitional cell carcinoma of the left ureter with lymph node metastasis. Microscopically, noncaseous epithelioid granuloma with large Langerhans cells was noted in the ureter and dissected lymph nodes.

[Adrenal pheochromocytoma with multiple neurofibromatosis on the trunk].

We report a case of adrenal pheochromocytoma in a patient with neurofibromatosis type 1 (NF1). A 65-year-old female patient was admitted to our hospital for examination of a right adrenal mass. The adrenal tumor was incidentally discovered by abdominal computed tomography during examination for hypertension in another hospital.

Expression of nitric oxide and inducible nitric oxide synthase in acute renal allograft rejection in the rat.

Background: Recent studies have shown that nitric oxide (NO) synthases, particularly inducible nitric oxide synthase (i-NOS), are induced in acute rejection episodes following heart, liver, pancreas and kidney allotransplantation. Furthermore, tissue and cellular injury has been demonstrated to be mediated by peroxynitrite (ONOO-), a metabolite of NO as well as a potent oxidant. However, a detailed relationship between NO, i-NOS and graft injury in transplantation remains elusive.

[Signet ring cell carcinoma of the urinary bladder: a case report].

A 69-year-old man was admitted complaining of macroscopic hematuria. Cystoscopic examination revealed a non-papillary tumor at the anterior wall of the urinary bladder. A pelvic computed tomographic (CT) scan showed marked thickening of the anterior bladder wall.