case_images: PMC5831945_01
case_images: MRI showing right solid extra-axial parieto-occipital lesion with typical characteristics of meningeal myelomatosis. The tumor adapts to the underlying brain surface, is intensely enhanced with contrast, and shows adjacent pachymeningeal enhancement with focal spread through leptomeninges towards sulci in the proximal convexity, associated with vasogenic edema but not causing intracranial herniation.
case_images: CRIHEM2018-6730567.001.jpg
case_images: PMC5831945_01_CRIHEM2018-6730567.001.jpg
case_images: fig1
case_images: The tumor adapted to the underlying brain surface showing adjacent pachymeningeal enhancement with focal spread through leptomeninges (Figure 1).
case_images: Pathological study: tumor proliferation of diffuse growth plasma cells made up of atypical plasma cells. The tumor immunophenotype shows lambda light chain restriction. The rest of the markers analyzed were negative (EMA, CD56, CD117, CD20, CD79a, and CD3). The Ki-67 proliferative index was approximately 30-40%.
case_images: CRIHEM2018-6730567.002.jpg
case_images: PMC5831945_01_CRIHEM2018-6730567.002.jpg
case_images: fig2
case_images: A biopsy of the cranial lesion was conducted on November 12, 2015, with pathological diagnosis of plasmacytoma (Figure 2).