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Presacral myxopapillary ependymoma presenting as an abdominal mass in a child
Insights
This study details a rare presacral myxopapillary ependymoma presenting as an abdominal mass. Unlike dorsal tumors, this ventral sacral ependymoma showed no signs of metastasis.
Area of Science:
- Neuro-oncology
- Spinal cord tumors
- Pediatric oncology
Background:
- Ependymomas in the sacrococcygeal region typically occur posteriorly.
- Myxopapillary ependymoma is the most common histologic type in this area.
- Ventral sacral ependymomas are exceptionally rare, with limited prior case reports.
Observation:
- A case of myxopapillary ependymoma originating in the presacral (ventral) area is presented.
- The tumor presented clinically as an abdominal mass, an unusual presentation for sacrococcygeal ependymomas.
- This represents one of the few reported cases of a ventral sacral ependymoma.
Findings:
- The reported presacral myxopapillary ependymoma did not exhibit metastasis.
- This contrasts with dorsal myxopapillary ependymomas, which have been known to metastasize occasionally.
- The rarity of ventral sacral ependymomas limits comparative analysis of metastatic potential.
Implications:
- Highlights the importance of considering rare tumor locations and presentations in diagnosis.
- Suggests potential differences in metastatic behavior between dorsal and ventral sacral ependymomas.
- Contributes to the limited literature on ventral sacral ependymomas, aiding future research and clinical understanding.
Abstract:
Ependymomas of the sacrococcygeal region almost always arise on the posterior aspect of the sacrum in the soft tissues and subcutaneous tissues of this region. The predominant histologic type of ependymoma in the sacrococcygeal area is myxopapillary. We report a case of myxopapillary ependymoma arising in the presacral area and presenting clinically as an abdominal mass. Ependymomas arising on the ventral aspect of the sacrum are exceedingly rare, and only 24 previous cases have been reported in the English literature. While dorsal myxopapillary ependymomas occasionally metastasize, there have been no reports of metastasis in the presacral tumors of this type.