Abstract
Soft tissue chondroma (STC), also known as extraskeletal chondroma or chondroma of soft parts is a benign cartilaginous tumor which arise de novo from soft tissue. Also, it is an extremely rare entity predominantly involving extremities, especially fingers. A 26 year old male presented with 3 year history of swelling in left index finger. On local examination a hard 2 × 2 cm swelling was seen over the volar aspect of left 2nd proximal phalanx. Swelling was mobile on contraction of tendons. X-ray showed a soft tissue shadow on volar aspect of left second proximal phalanx. Histopathology showed a well encapsulated, hypo cellular nodule composed of benign chondrocytes surrounded by hyaline chondroid matrix. Nuclear pleomorphism, mitosis or necrosis was not seen. Based on radiological and histopathological findings a diagnosis of STC was made. STC should be considered in patients with slow growing, soft tissue masses.
Highlights
Soft tissue chondroma (STC), known as extraskeletal chondroma or chondroma of soft parts and is a benign cartilaginous tumor
On local examination a hard 2 × 2 cm swelling seen over the volar aspect of left 2nd proximal phalanx
Soft tissue chondroma: a rare tumor presenting as a cutaneous nodule
Summary
STC, known as extraskeletal chondroma or chondroma of soft parts and is a benign cartilaginous tumor. It commonly affects soft tissues of hands and feet [1]. Fingers are most commonly involved followed by hands, toes, feet and trunk. It can be seen in dura, larynx, pharynx, oral cavity, skin, parotid gland and fallopian tube [2]. On local examination a hard 2 × 2 cm swelling seen over the volar aspect of left 2nd proximal phalanx. X-ray showed a soft tissue shadow on volar aspect of left second proximal phalanx. Patient gave written consent to the examination and biopsy after having been informed about the procedure
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