Immunohistochemical localisation of carcinoembryonic antigen (CEA) in malignant epithelial ovarian tumours using monoclonal antibodies.

The localization of carcinoembryonic antigen (CEA) in malignant epithelial ovarian tumours was studied using immunohistochemistry. The tissue included in the study consisted of 38 ovarian cancers : 14 mucinous adenocarcinomas, 23 serous adenocarcinomas and 1 endometroid carcinoma. Peroxidase-antiperoxidase staining technique using monoclonal antibodies to CEA was used on routinely fixed paraffin embedded tissues. CEA positivity was observed in all (100%) mucinous adenocarcinomas whereas only one case of serous cyst a denocarcinoma (4.3%) was weakly positive. The only case endometroid carcinoma encountered showed patchy CEA positivity.

Cell mediated immune status in carcinoma breast.

Thirty six cases of carcinoma breast were subjected to the assessment of CMI status by estimating different T lymphocyte parameters. The mean TPLC, T% and TTC in case of carcinoma were 1955/mm3 blood, 41% and 825/mm3 blood respectively which are evidently depressed than that of controls. This depression is progressive and clinical stage related, the least being in stage I and the most being in stage IV. The infiltrating varieties revealed a significant depression of T lymphocyte values than the non-infiltrating ones. Among the infiltrating types, IDC (T-38.9%) and Muc. Ca (T-29.1%) revealed most significant depression, thereby indicating worst prognosis. Six cases of IDCS, 2 cases of Medullary Ca and a solitary case of comedo Ca revealed a significant lymphocyte infiltration into the tumour cell mass proper. There was a depressed lymphocyte values but of lesser magnitude indicating a better prognosis. 6 cases without metastasis (clinical St. I) showed a lesser degree of depressed CMI than the cases with metastasis.