04_00405 Trixie Y Annular colonic mass

Case Study

04_00405 Trixie Y Annular colonic mass

A 6-year-old SF DSH was presented for evaluation of dyschezia because of a rectal stricture that was palpable on rectal palpation. Survey radiographs of the pelvis were within normal limits.

A 6-year-old SF DSH was presented for evaluation of dyschezia because of a rectal stricture that was palpable on rectal palpation. Survey radiographs of the pelvis were within normal limits.

Sonographic Differential Diagnosis

Annular colonic mass. This is consistent with colonic carcinoma, possible lymphoma, less likely granulomatous disease. This is obstructive. FNA are recommended for further information. No overt evidence of metastatic disease was noted.

Image Interpretation

The rectum in this patient presented an annular type lesion that measured approximately 0.9 cm with an obstructive stasis pattern. The wall appeared echogenic and remodeled with loss of detail. This is consistent with carcinoma, granulomatous disease or colonic lymphoma. Ultrasound-guided FNA are recommended if the sonographer is able to obtain a safe window without entering into the lumen. Otherwise, colonoscopy is recommended. The caudal aspect of the annular mass was not able to be visualized and therefore likely enters into the colorectal region. Therefore, surgical intervention would entail splitting the pelvis in order to remove the annular mass.

DX

Annular colonic mass

Outcome

None

Clinical Differential Diagnosis

Rectum – stricture, neoplasia, granulomatous reaction, focal perforation
Pelvic canal – neoplasia, granuloma, abscess

Sampling

None

Patient Information

Gender : Female, Spayed
Species : Feline
Type of Imaging : Ultrasound
Status : Complete

Images

yemen_trixie_colonic_carcinoma_annular_massyemen_trixie_colonic_carcinoma_annular_mass_short_axis
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