TABLE 1.

Distinguishing Features of Matrix Mineralization in Soft-Tissue Masses

Dystrophic Calcification	Metastatic Calcification	Ossification
Cortex Absent	Cortex Absent	Cortex Present
Underlying tissue damage	Underlying metabolic abnormality	Underlying tissue damage or mineralized matrix produced by neoplasm
Normal calcium and phosphate levels	Calcium × phosphate product > 60, or after renal transplantation	Normal calcium and phosphate levels
Amorphous or punctuate	Finely speckled or large amorphous, globular	Trabecular bone formation