Three cases of calcinosis of the tumoral type are reported. The significant features are:
1. The three patients with tumoral calcinosis are brothers.
2. The sites of time tumors, as well as the microscopic appearance and laboratory data, were similar.
3. The tumors appeared during adolescence and were self-limited in size, after growing for about one year.
4. Most of the tumors arose near joints in the region of gliding surfaces or bursae, but extended into muscles.
5. The tumors were fairly well defined, lobulated, and fluctuating.
6. They were not accompanied by pain, tenderness, or limitation of motion.
7. Complete removal seems to cure the condition locally, but similar tumors may appear elsewhere.
The fatal ending in the case of R. D. was the result of long-standing infection, due to early secondary infection following drainage, extensive amyloid changes in the viscera, and unfortunate circumstances accompanying his critical condition when final drainage was attempted.
"Tumoral calcinosis" seems to be a distinct entity of the general condition, calcinosis.