“…Our patient was also diagnosed with hyperprolactinemia and gynecomastia. A few case reports and studies have been published regarding the hyperprolactinemia in Klinefelter syndrome (Xu et al 2011, Pinto et al 1996, Kumanov 1995, Takeuchi et al 1999. A number of studies have tried to find a possible underlying disorder in the hypothalamo-pituitary-thyroid axis in patients with Klinfelter syndrome.…”