Image 12 of 17



Image Description

Tumoral calcinosis has a nodular architecture with fibrous septa coursing between nodules. During the active phase of the lesion, the nodules show a central area of calcification surrounded by macrophages, osteoclast-like multinucleated giant cells, fibroblasts, and chronic inflammatory cells. The cellularity decreases during the inactive phase, leaving behind amorphous or granular calcified material bordered by dense fibrosis.

Image 12 of 17