Journal of Pathology and Translational Medicine

Case Reports

Paraganglioma of Cauda Equina.: Seok Jin Kang, Youn Soo Lee, Byung Kee Kim, Sang In Shim; Korean J Pathol. 1997;31(9):895-897.

Abstract PDF: This case report describes a paraganglioma of the cauda equina in a 37-year-old man, as documented by light microscopy and immunohistochemistry. The patient experienced low back pain of 3 years duration, with the recent onset of sciatic pain and altered sensation in the right leg. Magnetic resonance imaging of L4 vertebral level revealed an ovoid, solid mass in the cauda equina. The mass was measured 1.5 cm in the greatest diameter. The histologic appearance was characterized by organoid pattern with clusters of chief cells (zellballen). Immunohistochemically, tumor cells are positive for keratin, epithelial membrane antigen, vimentin, neuron specific enolase and chromogranin.

Paraganglioma of Cauda Equina: A case report.: Ji Hwa Kim, Sang Han Lee, Yoon Kyung Shon, Jyung Sik Kwak, Tae Joong Shon; Korean J Pathol. 1994;28(5):528-532.

Abstract PDF: The clinical and pathological features of a paraganglioma arising in the cauda equina is described and compared with previous reports. The right microscopic fetures were similar to those of paragangliomas from other sites, with a 'Zellballen' pattern of cells containing arzyrophil granules. Immunohistocytochemical stains for neurone specific enolase, S-100 protein, cytokeratin were positive, but stains for glial fibrillary acidic protein were negative. Electron microscopy showed densely staining membrane-bound granules, cilia like structures and fibros bodies in the cytoplasm. The last two features only occur in paragangliomas from this site. The pathological findings suggest that paragangliomas in this site arise from pre-existing paraganglia, possibly of the visceral autonomic group.

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