Teaching NeuroImage: Cutaneous Lesions and Leptomeningeal Carcinomatosis in Gastric Signet-Ring Cell Carcinoma

Abstract

Figure Examination and Imaging Findings Pink and violaceous papules and nodules on the (A) back, (B) shoulder, and chest. Axial T1 postcontrast MRI brain sequences showing: (C) Linear enhancement of the left facial and vestibulocochlear nerve complex; (D) Enhancement of the right trigeminal nerve in Meckel cave; (E) Leptomeningeal enhancement at the level of T11; (F) Cauda equina nerve root enhancement, cumulatively concerning for diffuse, patchy leptomeningeal disease.