الصفحة 1 من عند 77 النتائج
The immunohistochemical demonstration of prostatic acid phosphatase (PAcP) and/or prostate-specific antigen (PSA) has been accepted as being reliable in identifying metastatic adenocarcinoma of prostate origin. However, islet cell tumors, especially hindgut-derived carcinoid tumors, have
A potential upregulation of receptor type protein tyrosine phosphatase IA-2 (ICA512) expression was detected by differential display and investigated in midgut carcinoid tumours. Normal intestine tissue and tumour tissue from 13 midgut carcinoid patients were studied by in situ hybridisation using
BACKGROUND
Strumal carcinoids (SC) are ovarian tumors containing thyroid parenchyma admixed with carcinoid elements. Microscopically, the carcinoid component of SC usually presents a ribbon or trabecular pattern similar to the pattern exhibited by hindgut carcinoids. The authors designed an
A case of prostatic carcinoid tumor with lymph node metastases is reported. The patient was a 78-year-old male who died in ventricular fibrillation. At autopsy, a 2 X 2 cm, white, irregular tumor was found in the prostate and there were several enlarged para-aortic lymph nodes. Both specimens
A case of rectal carcinoid tumor with liver metastases is reported in which a markedly elevated serum acid phosphatase level was found. Tissue assays of the patient's tumor, liver metastasis, and uninvolved liver were performed which demonstrated very high tumor levels of acid phosphatase. The
We report a case of carcinoid, diagnosed histochemically and biochemically, which was associated with grossly elevated serum prostatic acid phosphatase and normal serum prostate specific antigen.
In a study of 105 gastrointestinal carcinoid tumors, 67% of the rectal carcinoids and 15% of the carcinoids at other gastrointestinal sites were positive, immunohistochemically, for prostatic acid phosphatase activity. These findings are relevant to the differential diagnosis between rectal
Although prostate-specific acid phosphatase (PASP) has been recognized as a specific marker of tissue of prostatic origin, several investigators have pointed out that some of the carcinoid tumours and islet cell tumours of the pancreas reacted immunohistochemically to PSAP. We investigated 50 cases
Primary carcinoid tumors are rare and constitute 0.23% of all testicular tumors. We report a case of primary carcinoid tumor of testicular localization, with a review of the literature.A 29-year-old man, without specific ascendants, consulted the urology The cases of three patients with primary carcinoid tumor of the testis were reported. The patients were 41, 44, and 83 years of age. At initial examination, all three had testicular masses with or without associated pain, and none had the carcinoid syndrome. The tumors measured 4.3 cm, 3.0 cm, and
Prostatic adenocarcinomas commonly exhibit neuroendocrine differentiation as demonstrated by immunohistochemistry. However, true carcinoids of the prostate are rare. We describe herein a case of a primary carcinoid occurring synchronously with a conventional adenocarcinoma in the prostate of a
A case of primary carcinoid tumor of the kidney occurring in a 66-year-old woman is reported. The tumor was 10 x 10 x 9 cm in size, solid, yellowish-white in color, and associated with massive hemorrhagic necrosis. Histologically, it was composed of trabecular and anastomosing ribbon-like nests. The
A case of the carcinoid syndrome associated with a proximal myopathy is reported. Histology showed advanced atrophy of type II muscle fibres but no inflammation. Perinuclear acid phosphatase was increased. Electron microscopy revealed persistence of the Z-line until the muscle fibre had been