Adenocarcinoma of the Lung Metastatic to the Ovary With a Signet Ring Cell Component.

A nonsmoker 45-year-old woman, presented with a solid right ovarian mass. Microscopic examination revealed heterogeneous histology with tubular formations and extensive signet ring cell component that resembled the usual appearance of metastatic gastric carcinoma to the ovary. Moreover, the histology also showed solid nests of cells with a microvacuolated basophilic cytoplasm similar to those found in adenosquamous cervical carcinoma of glassy cell type.