Coexisting Optic Disc Melanocytoma and Pituitary Adenoma.

To report a rare case of optic disc melanocytoma coexistent with pituitary adenoma. Ophthalmological examination with perimetry and magnetic resonance imaging (MRI) of the brain and orbits was done. A 42-year-old woman presented with complaints of progressive diminution of vision in the right eye of 6 weeks' duration. Visual acuity in the affected right eye was 6/60 and in the left eye it was 6/6. On examination, a brown-black lesion was noted over the optic nerve head in the right eye. On perimetry, the visual field was constricted in the right eye and a superior altitudinal defect was found in the left eye. MRI of the brain and orbits revealed a pituitary adenoma with suprasellar extension. The patient underwent endoscopic transphenoidal pituitary adenoma excision with uneventful recovery. Three months following surgery, visual acuity improved to 6/6 in both eyes with partial visual field recovery and was maintained at 10 months of follow-up. There was no recurrence or metastasis. A high degree of suspicion is required to screen for possible coexistent orbital or central nervous system pathology in cases of optic disc melanocytoma with disproportionate signs or symptoms.

Déclaration de conflit d'intérêts

The authors have no conflicts of interest to declare.