title: Primary lymphoma of the uterine horn in a Lhasa Apso dog.
abstract: Primary lymphomas of the canine female genital tract are uncommon tumours. A 9-year-old intact female Lhasa Apso dog presenting with a closed pyometra underwent an ovariohysterectomy (OHE), and the hyperplastic uterine horn along with multiple follicular cysts on the right ovary was examined by histological analysis. Severe infiltration of medium-sized lymphocytes with strong positive immunoreactivity for CD79a and numerous anaplastic features was detected in the unilateral uterine horn, and the dog was diagnosed as having extranodal marginal zone B-cell lymphoma (MZBCL). The present case reports an extremely rare occurrence of primary lymphoma involving the uterine horn in a dog and describes histological characteristics of the tumour for definite diagnosis.
authors: Ji-Seung
authors: JS
authors: Ko
authors: Han-Jun
authors: HJ
authors: Kim
authors: Su
authors: S
authors: Han
authors: Department of Veterinary Clinical Pathology, College of Veterinary Medicine and Veterinary Science Research Institute, Konkuk University, Seoul 143-701, Republic of Korea. shdo@konkuk.ac.kr.
authors: Sun-Hee
authors: SH
authors: Do