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Primary sclerosing lipogranuloma of the rectum: CT findings

¹ Department of Radiology and Research Institute of Radiology, ² Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, 388-1 Pungnap2-dong, Songpa-gu, Seoul 138-736, Korea

View larger version (70K): [in a new window]   Figure 1. 54-year-old woman with primary sclerosing lipogranuloma of the rectum. (a,b) Transverse contrast-enhanced CT scans with a craniocaudal sequence show a well-margined, homogeneous mass (arrows) with isoattenuation to the gluteus muscle in the right lateral wall of the rectum. An endorectal tube is noted in the rectal lumen. (a) There is a small portion of fat (thin arrow) in the mass. (b) The intact, inner, enhancing layer of the rectal wall (open arrow) is noted and suggests a submucosal mass.

View larger version (63K): [in a new window]   Figure 2. Photograph of the gross specimen shows an ill-defined mass extending from the submucosa to the subserosa of the rectum. The cut surface of the mass was yellow, granular and gelatinous. The overlying mucosa was unremarkable (white arrow). The muscle layer of the rectum is seen as a white band (black arrows) between the submucosa and the subserosa of the rectum. The mass contained a small dark yellow portion of intact fat tissue (open arrows), which corresponded to a small fatty portion of the mass on CT scans.