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CASE REPORTS
JOURNAL ARTICLE
When cancer patients suddenly have a positive pregnancy test.
BMJ Case Reports 2017 July 2
We present the case of non-small cell lung cancer (NSCLC) in a 48-year-old woman with an active history of smoking. The patient initially presented to her general practitioner with a progressive swelling on the neck. Further investigations diagnosed a metastatic lung tumour, and palliative chemotherapy was started. After 5 months of treatment, by newly reported amenorrhoea, cautiously before a restaging CT scan of the abdomen, a pregnancy test was performed and was positive. Both the gynaecological examination and the hormonal panel yielded no signs of pregnancy. Immunohistochemically, staining of the tumour was strongly positive for β-subunit of human chorionic gonadotropin (β-hCG) suggesting that the tumour was responsible for high β-hCG levels.Paraneoplastic β-hCG secretion from adenocarcinomas is rare. In the literature, only a few such cases have been reported. Previous studies suggested that the ability to secrete β-hCG in tumours may correlate to some extent to chemoresistance and thus, to a worse prognosis.
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