Pituitary adenomas measuring more than 10 mm are macroadenomas. These tumors may cause visual impairment due to compression of the optic nerve, chiasm, or optic tract ¹. Usually, pituitary macroadenomas higher than 2 cm in the vertical size ² and displacement of the optic chiasm greater than 3 mm ¹ produce vision impairment.

This case illustrates the typical appearance of a pituitary macroadenoma diagnosed based on clinical and imaging findings. This tumor was higher than 2,0 cm in vertical size, causing displacement of the optic chiasmal greater than 3 mm, and consequently vision disturbances on the patient. 

Case courtesy

• Sterfferson Morais, MD - PGY-3, Radiology Resident, Department of Radiology
• Antonio Rodrigues de Aguiar Neto, MD - Radiologist, Department of Radiology
• Hospital da Restauração – Recife, PE – Brazil