Sahli, Rahel; Christ, Emanuel; Kuhlen, Dominique; Giger, Olivier; Vajtai, Istvan (2011). Sellar collision tumor involving pituitary gonadotroph adenoma and chondroma: a potential clinical diagnosis. Pituitary, 14(4), pp. 405-408. Norwell, Mass.: Springer US; http://www.springer-ny.com 10.1007/s11102-009-0199-6
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We report on a 74-year-old male patient who presented with progressive neuroophthalmologic symptoms soon after the administration of a long-acting gonadotropin-releasing hormone agonist for treatment of a prostate cancer. Imaging revealed a destructively growing and extensively calcified sellar mass inconsistent with a pituitary adenoma. A transseptal transsphenoidal tumor mass reduction yielded a histological diagnosis of a collision tumor comprised of a gonadotroph adenoma intermingled with osteochondroma. We discuss a potential causal relationship between the administration of the long-acting gonadotropin-releasing hormone agonist and the sudden appearance of the previously unsuspected sellar lesion. Although the association of these two tumors is very likely coincidental, the possibility of causal relationship is addressed.
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