Diagnosis and management of a case of retroperitoneal eosinophilic sclerosing fibroplasia in a cat

Thieme, Maureen E; Olsen, Anastasia M; Woolcock, Andrew D; Miller, Margaret A; Simons, Micha C

Repeat abdominal CT with triple-phase contrast and 1.2 mm slice thickness was performed (Figure 4) , which revealed the absence of peritoneal effusion. The previously described massive multi-lobulated, heterogeneous soft tissue mass was markedly reduced in size. One ovoid soft tissue-attenuating mass, measuring approximately 2.8 cm in length, remained dorsal to the rectum from the level of the first sacral vertebra to the third coccygeal vertebra, which was causing ventral displacement and narrowing of the rectum at the level of the sacrum. On a sagittal view, the approximate size of the mass was previously 22.6 cm 2 vs 4.93 cm 2 on repeat CT scan. The previous mineral foci were absent. Sacral and colic lymphadenomegaly was present, but the remainder of the previously described lymph nodes were of normal size.