McCune-Albright syndrome (MAS) is an uncommon polyostotic manifestation of fibrous
dysplasia in association with at least one endocrinopathy that is mostly associated
with precocious puberty and hyperpigmented skin macules named café-au-lait spots.
We present an atypical manifestation of McCune-Albright syndrome in a 19-year-old
man with the uncommon association of polyostotic fibrous dysplasia and gigantism in
the absence of café-au-lait spots and precocious puberty. He presented with a height
increase to 202 cm in the previous 3 years, which had become more progressive in the
few months prior. Physical examination revealed only a mild facial asymmetry; however,
a computed tomography (CT) scan discovered vast areas of voluminous bones with ground-glass
density and thickening involving the craniofacial bones and skull base. Magnetic resonance
imaging (MRI) found a right stalk shift of the pituitary with a 20 mm pituitary adenoma.
We describe the diagnostic and endoscopic endonasal transsphenoidal approach for excision
of the tumor.
Keywords
McCune-Albright syndrome - neuroendoscopy - pituitary adenoma