Abstract:Background: Giant prolactinomas (GPs) are rare representing 2-3% of prolactinomas and only ~ 0.5% of all pituitary tumors. Various definitions have been proposed for GP but commonly accepted criteria is tumor dimension of ≥4 cm. GP is often associated with very high prolactin (PRL) ranging 1,000 -100,000 ng/ml, significant extrasellar extension and no concomitant growth hormone or ACTH secretion. Patients predominantly present with neurological symptoms rather than endocrine dysfunction, and so the primary goa… Show more
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