Lung Adenocarcinoma Metastatic to the Cervix: Report of a Rare Case and Review of the Literature

Abstract Metastatic involvement of the cervix by nongynecologic malignancies is an extremely rare occurrence. We report a case of metastatic lung adenocarcinoma to the cervix. The patient is a 70-year-old woman who was admitted because of acute kidney injury. Imaging studies revealed left-sided hydronephrosis and a 3.2-cm heterogeneous pelvic mass involving the left pelvic wall. The patient underwent hysteroscopy with dilatation and curettage. Specimens labeled with endometrial and endocervical curettings were notable for tumor cells infiltrating the fibromuscular tissue. Immunohistochemical studies showed that the tumor cells were positive for CK7, napsin A, and TTF1, whereas they were negative for PAX8, p16, p40, p53, GATA3, and ER. This immunophenotype was consistent with a metastatic adenocarcinoma of the lung primary.