[Primary malignant esophageal melanoma: report of a case]. / Melanoma maligno primario de esófago: presentación de un caso.

Primary malignant melanoma of the esophagus is rare. We identified one patient over a period of 15 years. This patient was a 80 years-old caucasian man. No association was found with tobacco or ethanol use, nor was there a personal or family history of malignant melanoma. Symptoms were related to obstruction. This tumor was polypoid in its upper part and ulcero-infiltrant in its lower part. Histologically the melanoma had epithelioid spindle cells. The neoplasm was immunoreactive for S-100 protein and non reactive with anti-cytokeratins. This patient was treated by Garlock type, esophagectomy with excision of 13 cm of esophagus and 2 cm of stomach. The survival was of only 3 days, because he developed acute respiratory and cardiac disease syndrome and died.

[Cystic teratoma of the ovary and cancer: structural and histochemical study]. / Teratoma quístico de ovário y cáncer: estudio estructural e histoquímico.

Three cases corresponding to surgical pieces which included cystic ovarian tumors were studied, with the purpose of characterizing their structural and cytochemical components. Techniques of Hematoxylin -eosin, P.A.S., P.A.S.-amylase, Cason's thrichromic and Ag (Senior-Munger) were employed, the last one to determine the presence of cytoplasmic secretory granules. In two the of cases, mature cystic teratomes were found, one of them with malignant development, typical of an adenocarcinoma. The last case corresponded to a monodermic teratoma--highly specialized struma of the ovary-carcinoid tumor. It is to be noted that, in this last case, the patient consulted for hypertensive crises.

Teratoma quístico de ovário y cáncer: estudio estructural e histoquímico. / [Cystic teratoma of the ovary and cancer: structural and histochemical study]

Three cases corresponding to surgical pieces which included cystic ovarian tumors were studied, with the purpose of characterizing their structural and cytochemical components. Techniques of Hematoxylin -eosin, P.A.S., P.A.S.-amylase, Casons thrichromic and Ag (Senior-Munger) were employed, the last one to determine the presence of cytoplasmic secretory granules. In two the of cases, mature cystic teratomes were found, one of them with malignant development, typical of an adenocarcinoma. The last case corresponded to a monodermic teratoma--highly specialized struma of the ovary-carcinoid tumor. It is to be noted that, in this last case, the patient consulted for hypertensive crises.