CALCIFYING FIBROUS PSEUDOTUMOR OF VISCERAL PERITONEUM

Aims: Calcifying fibrous pseudotumour, a recently characterized rare b ut distinctive lesion, has been reported previously only in soft tissu es and in the pleura. We describe four cases of calcifying fibrous pse udotumour which arose in the visceral peritoneum of the small bowel an d stomach. Methods and results: In contrast to the calcifying fibrous pseudotumour of soft tissues which generally occurs in children, all f our cases in our report occurred in adults, We consider the calcifying fibrous pseudotumour to be a distinctive tissue reaction, Conclusions : Its characteristic appearance of concentric whorls of lamellated col lagen associated with psammoma bodies and other forms of dystrophic ca lcification is entirely different from all other lesions displaying hy aline collagenous deposits, such as inflammatory pseudotumour, desmoid , hyalinizing granuloma or fibrous plaques of peritoneum.