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Pelvic ependymoma arising from the small bowel.
V Hofman1, V Isnard, A Chevallier
1Department of Pathology, University of Nice, France. hofman@unice.fr
Pathology
|March 31, 2001
Summary
This study reports the first case of a small bowel ependymoma in a 37-year-old woman. This rare abdominal tumor, diagnosed via microscopy and electron microscopy, highlights unusual tumor locations.
Area of Science:
- Oncology
- Gastroenterology
- Neuropathology
Background:
- Ependymomas are typically central nervous system tumors.
- Ectopic ependymomas are rare and their behavior is poorly understood.
Observation:
- A 37-year-old woman presented with an abdominal tumor adhered to the ileum.
- Histopathological examination revealed features consistent with ependymoma, including perivascular pseudorosettes.
- Electron microscopy confirmed abundant intermediate filaments, and flow cytometry showed a diploid tumor cell population.
Findings:
- This case represents the first documented instance of an ependymoma originating in the small intestine.
- The tumor was not associated with the genital tract, omentum, or sacrococcygeal region.
Implications:
- The occurrence of ependymoma in the small bowel is an extremely rare phenomenon.
- Prognosis for ectopic ependymomas remains challenging to ascertain due to limited data.