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Intrinsic brainstem choroid plexus papilloma. Case report.

Ashok Pillai¹, Kariyattil Rajeev, Sushil Chandi

¹Department of Neurosurgery, Amrita Institute of Medical Sciences and Research Centre, Lisie Hospital, Kochi, Kerala, India.

Journal of Neurosurgery

|June 18, 2004

Summary

A rare brainstem choroid plexus papilloma, initially misdiagnosed as a pontine cavernoma, was identified. This case explores the tumor's unusual location and a trial of lomustine chemotherapy for residual disease.

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Area of Science:

Neuro-oncology
Neuropathology
Neurosurgery

Background:

Choroid plexus papillomas (CPPs) are rare central nervous system tumors.
CPPs typically occur in intraventricular locations.

Observation:

An intrinsic brainstem lesion was initially diagnosed as a pontine cavernoma.
The lesion was ultimately identified as a choroid plexus papilloma.

Findings:

This represents an extremely rare intraparenchymal occurrence of CPP.
The brainstem location of this CPP is previously unreported in medical literature.

Implications:

This case highlights the importance of considering rare diagnoses in neuroimaging.
The study reports on a trial of lomustine chemotherapy for residual tumor management.

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Further research into rare CPP presentations and treatment strategies is warranted.