Clear cell chondrosarcoma in association with niemann-pick disease.

Purpose: The purpose of this case report is to bring to light this unusual combination of two rare diseases, namely Neimann-Pick disease Type B and clear cell chondrosarcoma occurring in the same patient. This has not previously been reported in the world literature.

Subject: Niemann-Pick disease (NPD) is a rare autosomal recessive inborn error of metabolism.