Ependymoma with Signet-Ring Cells

Gary W. Mierau Department of Surgical Pathology, Room 2146, Loma Linda University Medical Center, 11234 Anderson Street, Loma Linda, California, 92354, USA

Douglas A. Weeks Departments of Pathology, The Children's Hospital, Denver. Colorado, Loma Linda University, Loma Linda, California, USA

Craig W. Zuppan Department of Pathology, Loma Linda University, Loma Linda, California, USA

Abstract

Two patients presented with unusual primary brain tumors having abundant signet-ring cells, for which electron microscopic study was necessary to establish the diagnosis of ependymoma. The light and electron microscopic features of these tumors are discussed, with brief comments on the differential diagnosis.

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Ependymoma with Signet-Ring Cells

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Ependymoma with Signet-Ring Cells

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