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Rivista di Medicina Interna
Indexed/Abstracted in: BIOSIS Previews, Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
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Panminerva Medica 2000 December;42(4):237-40
Gonadotroph cell pituitary adenomas in males
Manieri C., Di Bisceglie C., Razzore P., Fornengo R., Papotti M. *, Isolato G. **, Ciccarelli E.
From the UODU Endocrinologia Dipartimento di Medicina Interna
*Dipartimento di Scienze Biomediche e Oncologia Umana
**Dipartimento di Discipline Medico-Chirurgiche Sezione di Scienze Radiologiche Università degli Studi di Torino, Torino, Italy
Background. Considered exceptional in the past, gonadotroph cell pituitary adenomas account for 3.5-6.4% of total surgically excised pituitary adenomas when examined with immunospecific staining. The aim of this study was to describe the clinical, hormonal, radiological and immunohistochemical features, the management and the follow-up of our patients with gonadotroph adenoma.
Methods. In this retrospective study we describe 14 male subjects aged 19-70 yrs affected by gonadotroph cell pituitary adenomas; the patients were studied by hormonal, radiological and immunohistochemical investigations and followed up for 3-13 yrs by ambulatory and/or hospitalized care.
Results. Visual impairment and/or decreased libido and erectile dysfunction were the symptoms at presentation. Increased serum gonadotropin concentrations were shown in 3 patients. Reduced levels of testosterone were present in 9 patients, and normal in the remainder. At diagnosis all patients had pituitary macroadenomas, with wide extrasellar extension in 12. All patients underwent trans-sphenoidal surgery and immunohistochemical staining of surgically excised specimens showed the presence of gonadotroph and α-subunit cells in all pituitary adenomas. After surgery 3 patients had clear radiological evidence of normal pituitary; in the others a doubtful MRI picture or a residual adenomatous tissue were present. In the patients who did not undergo radiotherapy immediately after surgery, a regrowth of tumoral tissue was shown in 1-10 yrs.
Conclusions. We stress the importance of a close follow-up of patients with gonadotroph adenomas after surgery, and we raise the question of whether radiotherapy may be useful for avoiding any further adenomatous regrowth.