title: Secretion of hCG/beta-hCG by squamous cell carcinoma of the lung in a 31-year-old female smoker.
abstract: We describe a rare case of pulmonary squamous cell carcinoma secreting human chorionic gonadotropin (hCG) and its beta-subunit (beta-hCG) in a young female smoker. A 31-year-old mother of one child had been suffering from dysfunctional uterine bleeding for about 1 year. Pelvic examinations and abdominal ultrasonography yielded no abnormal findings and no signs of pregnancy. She developed a pain in the right chest and a huge (12x10 cm) squamous cell carcinoma was diagnosed in the right lower lobe. The serum hCG and beta-hCG levels were high: hCG 5611 mlU/ml (normal upper limit 0.7 mIU/ml), beta-hCG 12 238 mIU/ml (normal upper limit 0.5 mIU/ml). The patient underwent right lower lobectomy and systematic lymph node dissection. Microscopic study showed a poorly differentiated squamous cell carcinoma. The pathological stage was T2N0M0, stage IB. Immunohistochemical staining of the tumor was strongly positive for hCG. The serum hCG level returned to normal 1 month after the operation, while an additional 2 months were necessary for the beta-hCG level to normalize. Dysfunctional uterine bleeding disappeared and the patient is doing well, with no signs of recurrence, 9 months after the resection.
authors.affiliation: Department of Thoracic Oncology, National Cancer Center Hospital East, Kashiwa, Chiba, Japan. jyoshida@east.ncc.go.jp
authors.forename: J
authors.initials: J
authors.lastname: Yoshida
authors.forename: K
authors.initials: K
authors.lastname: Nagai
authors.forename: M
authors.initials: M
authors.lastname: Nishimura
authors.forename: K
authors.initials: K
authors.lastname: Takahashi
authors.forename: R
authors.initials: R
authors.lastname: Kakinuma
authors.forename: Y
authors.initials: Y
authors.lastname: Nishiwaki
authors.forename: T
authors.initials: T
authors.lastname: Yokose
mesh_terms: D000328:Adult; D002294:Carcinoma, Squamous Cell / Q000000981:diagnostic imaging / Q000378:metabolism* / Q000473:pathology; D006063:Chorionic Gonadotropin / Q000378:metabolism*; D018997:Chorionic Gonadotropin, beta Subunit, Human / Q000378:metabolism; D005260:Female; D006729:Hormones, Ectopic / Q000378:metabolism*; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging / Q000378:metabolism* / Q000473:pathology; D011859:Radiography; D012907:Smoking
chemical_list: D006063:Chorionic Gonadotropin; D018997:Chorionic Gonadotropin, beta Subunit, Human; D006729:Hormones, Ectopic