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A hCG‐secreting testicular seminoma revealed by male infertility: mechanism of hCG‐evoked endocrine disturbances
Author(s) -
Lefebvre H.,
Laquerriere A.,
Cleret J. M.,
Kuhn J. M.
Publication year - 2009
Publication title -
andrologia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.633
H-Index - 59
eISSN - 1439-0272
pISSN - 0303-4569
DOI - 10.1111/j.1439-0272.1993.tb02726.x
Subject(s) - endocrine system , seminoma , infertility , endocrinology , medicine , testosterone (patch) , hormone , paracrine signalling , hyperplasia , andrology , biology , pregnancy , chemotherapy , receptor , genetics
Summary. We report a case of a hCG‐producing testicular seminoma revealed by a male infertility due to oligozoospermia. No palpable tumour was found at clinical examination and the diagnosis was established on hormonal data and the echography of the testis. The endocrine patterns associated high levels of β‐hCG and 17β‐oestradiol contrasting with low levels of LH and FSH and normal levels of testosterone. Immuno‐histochemical studies confirmed the ectopic production of hCG. Histological findings and the evolution of hormonal parameters suggested that hyperoestradiolaemia was probably the consequence of a hCG‐evoked Leydig cells hyperplasia involving a paracrine mechanism. In fact, after removal of the tumour, a dramatic decrease of plasma sex steroid levels was observed before recovery of normal testicular endocrine and exocrine functions.