Vaginal metastasis of lung cancer: a case report.

BACKGROUND Lung cancer is the second most common malignant tumor, with increasing incidence in the female population. The most frequent metastatic sites are the regional lymph nodes and surrounding areas as well as liver, adrenal gland, bones and brain. Metastases in the vagina of primary lung cancer have not been previously reported. CASE REPORT Lung cancer was diagnosed in a 67-year-old, postmenopausal woman. Two years following partial lung resection (right apical lobe, R0-resection, CR), the patient complained of increasing problems with urination. A suspect tumor was identified with palpation and confirmed sonographically. Histological and immunohistochemical examinations of a vaginal excisional biopsy revealed metastatic adenocarcinoma, with the staining reactivity as primary lung neoplasm. Anterior exenteration was performed. CONCLUSION Some cases of vaginal metastases from extragenital tumors have been previously reported. This is the first report of vaginal metastases from primary lung cancer. We suggest that adenocarcinoma especially tend to form metastases in the female genital tract. The present case emphasizes that, in women with unclear symptoms and findings in the small pelvis (e.g. urination problems, suspect vaginal tumor), the formation of such metastases should be taken into account.