Sarcoidosis Mimicking Skull Base Meningioma

Sarcoidosis is a systemic disease characterized by granulomatous inflammation. Pulmonary and lymphatic granulomatous involvement are common.We present a rare case report of involvement of the central nervous system affecting the ocular region and mimicking optic nerve sheath meningioma. We report the case of a 79-year-old female patient with progressive visual impairment with an evolution of 4 years. Amagnetic resonance imaging scan of the cranium with gadolinium and intense homogeneous contrast enhancement revealed an expansive lesion in the right optic nerve, at the height of the optic canal. The patient was submitted to the neurosurgical approach with lesion biopsy, which showed sarcoidosis of the central nervous system. Due to the rarity of central nervous system involvement, the diagnosis of this pathologymay unfortunately be postponed. The present article aims to elucidate this pathology as a differential diagnosis of retro-orbital tumors.

Reparo de mucocele pós-traumática em região frontal: relato de caso e revisão de literatura / Post traumatic mucocele treatment

Mucoceles são lesões revestidas por epitélio pseudoestratificado, originadas pela obliteração do orifício de drenagem dos seios da face. São lesões raras que podem evoluir com complicações, com envolvimento do sistema nervoso. Realizamos uma revisão de literatura com bases diagnósticas e apresentamos o relato de uma mucocele pós-traumática (14 anos de evolução) com a realização de tratamento cirúrgico e seus resultados.

Mucoceles are benign, slow-growing lesions defined as mucus-filled pseudocystic formations. Mucoceles usually arise because of sinus ostium obstruction, preceded by infection, fibrosis, inflammation, trauma, surgery or tumors. We describe a case of mucocele of the frontal sinus, 14 years after the initial trauma, with a review of the published data concerning the etiology, diagnosis, and treatment planning.