title: Ultrasound and computed tomography of the iliosacral lymphatic centre in dogs with anal sac gland carcinoma.
abstract: In this prospective study, we hypothesized that computed tomography (CT) would identify more normal and abnormal iliosacral lymph nodes (LNs) than abdominal ultrasound in dogs with anal sac gland carcinoma (ASGC). Twelve client-owned dogs with ASGC but without distant metastasis were enrolled. Abdominal ultrasound and contrast-enhanced CT scans of the abdomen were obtained. Iliosacral LNs were counted and assessed for location, laterality and size. Significantly (P < 0.00001) more iliosacral LNs were identified with CT (61) than ultrasound (30), including significantly (P = 0.00012) more medial iliac LNs with CT (33) than ultrasound (19). There was no difference in number of internal iliac LNs identified with CT versus ultrasound. Significantly (P = 0.000061) more sacral LNs were identified with CT (15) than ultrasound (0). Ultrasound identified slightly more (7) abnormal iliosacral LNs than CT (5). Contrast CT was able to identify more normal but not more abnormal LNs than ultrasound.
authors.affiliation: Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA, USA.
authors.forename: R E
authors.initials: RE
authors.lastname: Pollard
authors.affiliation: Veterinary Medical Teaching Hospital, University of California, Davis, CA, USA.
authors.forename: M C
authors.initials: MC
authors.lastname: Fuller
authors.affiliation: Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA, USA.
authors.forename: M A
authors.initials: MA
authors.lastname: Steffey
mesh_terms: D000694:Anal Gland Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D000695:Anal Sacs / Q000000981:diagnostic imaging*; D000818:Animals; D004283:Dog Diseases / Q000000981:diagnostic imaging* / Q000473:pathology; D004285:Dogs; D005260:Female; D008198:Lymph Nodes / Q000000981:diagnostic imaging; D008207:Lymphatic Metastasis; D008297:Male; D011446:Prospective Studies; D014057:Tomography, X-Ray Computed / Q000662:veterinary; D014463:Ultrasonography / Q000662:veterinary
keywords: imaging; metastasis; oncology; small animal; surgical oncology