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Case Reports
. 1995 May-Jun;14(3):159-61.

Choroid plexus papilloma containing melanin pigment

K Watanabe  1 , Y Ando, H Iwanaga, C Ochiai, M Nagai, K Okada, N Watanabe
Affiliations
  • PMID: 7671458
Case Reports

Choroid plexus papilloma containing melanin pigment

K Watanabe et al. Clin Neuropathol. 1995 May-Jun.

Abstract

The authors report a case of a choroid plexus papilloma in the fourth ventricle containing melanin pigment. The pigmented granules in this tumor were positive for Fontana-Masson, periodic acid-Schiff, acid fast and Sudan staining, suggesting that the pigment contained lipofuscin as well as melanin. The possibility that the melanin derived from lipofuscin by "melanization" through pseudoperoxydation is discussed.

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