Calcifying fibrous pseudotumour

This tumour has been variously reported in soft tissues (forearm, thigh, trunk, scrotum, groin, axilla, mediastinum), pleura and peritoneum. It may be solitary or multiple. The tumour nodule(s) are non-encapsulated and consist of dense fibrous tissue, chronic inflammatory cell infiltrate and dystrophic or psammomatous calcification.

low MW cytokeratin	0/11
EMA	0/11
desmin	0/11
muscle-specific actin	0/11
S-100	0/11
calretinin	0/11
CD34	2/21, 0/12, 0/13

Differential diagnosis

fibromatosis
elastofibroma
inflammatory pseudotumour
smooth muscle tumour
solitary fibrous tumour

References

1Weynand, B., Draguet, A. P., Bernard, P., Marbaix, E., Galant, C. Calcifying fibrous pseudotumour: first case report in the peritoneum with immunostaining for CD34. Histopathology 1999;34:86-87.

2Jeong, H. S., Lee, G. K., Sung, R., Ahn, J. H., Song, H. G. Calcifying fibrous pseudotumor of mediastinum--a case report J Korean Med Sci 1997;12:58-62

3Fukunaga, M., Kikuchi, Y., Endo, Y. and Ushigome, S. Calcifying fibrous pseudotumor. Pathol Int 1997;47:60-3.

This page last revised 3.9.2001.