Calcifying Fibrous Pseudotumor of the Retroperitoneum: A Case Report

Abstract

. A homogeneous mass lesion with similar to lower signal intensity than back muscle is seen in axial T2-(A) and coronal T1-weighted (B) images. Dynamic Gadolinium-enhanced coronal MR images (60 seconds (C) and 5 minutes (D) after contrast injection) show a mass with progressive contrast enhancement from the periphery to the center of the mass. Inhomogeneous and strong enhancement was left until 7 minutes after contrast injection (not shown here). We report a case of calcifying fibrous pseudotumor in the retroperitoneum. This is a rare soft tissue mass lesion with specific radiologic and pathologic findings, and it is the first reported case arising in the retroperitoneum. The CT, MR and angiographic findings are described.

Gastric calcifying fibrous pseudotumour associated with an ulcer: report of one case with a literature review

“…CFPT is an uncommon and phymatoid lesion [1][2][3]. Until now, only 100 cases (40 males and 60 females) of CFPT have been reported in the literature [3][4][5][6][7][8][9][10][11][12][13][14][15][16], with a mean age of 28.37 ¡ 17.17 years (range 5 weeks to 67 years). The lesions have a wide anatomical distribution, including the head, neck, limbs, trunk, mediastinum, heart, lung, axillary fossa, groin, scrotum, retroperitoneum, pleura, peritoneum, omentum, mesentery, and subserosa or submucosa.…”

“…Unfortunately, we did not perform a delayed scan. Cho et al [15] have reported a CFPT which was located in the retroperitoneum, the mass manifested as iso-to lower signal intensity mass when compared with the signal intensity of back muscle on MRI. Dynamic gadolinium-enhanced coronal magnetic resonance (MR) images (60 s and 5 min after contrast injection) showed as progressive contrast enhancement from the periphery to the centre of the mass.…”