A case of recurrent subependymoma with subependymal seeding: Case report

Ho Jun Seol, Sung Kyun Hwang, Yoon La Choi, Je G. Chi, Hee Won Jung

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14 Scopus citations


Subependymoma is a rare, slow growing, rarely recurrent tumor. We report a case of recurrent subependymoma with subependymal seeding. An intraventricular tumor in the left temporal horn was detected in a 48-year-old female who presented with a 4-year history of dizziness and memory disturbance. Following near total surgical resection, a tumor diagnosis of subependymoma was confirmed by scattered clusters of isomorphic nuclei embedded in a dense fibrillary matrix of glial cell processes. Twenty-six months after surgery, follow-up (F/U) magnetic resonance (MR) imaging revealed tumor recurrence in the previous site which necessitated linear accelerator radiosurgery (LINAC). A further 21 months later, F/U MR imaging showed recurrent, multiple, enhanced, nodular lesions in the enlarged left lateral ventricle for which the patient underwent reoperation. Radiological and operative findings revealed local relapse with subependymal seeding. The pathological finding was similar to that of the previous tumor and compatible with subependymoma. The patient underwent radiation therapy for the residual tumor. This case history suggests that symptomatic residual tumors require close observation even though the clinical course of subependymoma is usually benign.

Original languageEnglish
Pages (from-to)315-320
Number of pages6
JournalJournal of Neuro-Oncology
Issue number3
StatePublished - May 2003

Bibliographical note

Funding Information:
This work was supported in part by a grant from Seoul National University Hospital.


  • Recurrent subependymoma
  • Subependymal seeding


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