[Bilateral stellate neuroretinitis as presenting sign of pheochromocytoma].

We report the case of a 21-year-old male patient admitted emergently with progressive bilateral severe visual loss for 1 month. Posterior segment examination revealed bilateral stellate neuroretinitis. Infectious serologies were negative, and brain CT was normal.

[Marcus Gunn Syndrome. Study of 3 rare cases].

Purpose: reporting three rare cases of Marcus Gunn Syndrome and analyzing the clinical features of this entity.

Methods: Case reports of three patients with a Marcus Gunn Syndrome, treated at the Ophthalmology B CHU service Rabat - Morocco.

Results: Our patients are two boys aged 1 and 2 years old, and a 31 year old woman with a Marcus Gunn Syndrome.

[Retrobulbar optic neuropathy secondary to an undifferentiated carcinoma of the sphenoid sinus].

Undifferentiated carcinoma of the paranasal sinuses is a rare malignant tumor, characterized by rapid growth, local/regional invasion, metastatic potential and poor prognosis despite aggressive treatment. Clinically, this tumor may manifest as episodes of epistaxis, headache or ophthalmic signs, particularly oculomotor nerve palsies, optic atrophy or even proptosis in the case of orbital extension. We report the case of a patient admitted with a left retrobulbar optic neuropathy, which led to a diagnosis of undifferentiated carcinoma of the sphenoid sinus.