Segmental aplasia of uterine body in an adult mixed breed dog.
Segmental aplasia of the uterine body was diagnosed in a 5-year-old, mixed breed bitch. Abdominal radiography and transabdominal ultrasonography revealed marked dilation of fluid-filled uterine horns with no evidence of a uterine body. Sex hormone assays did not detect the presence of estradiol-17 beta; however, progesterone (2 ng/ml) was found in the serum, indicating anestrus. On gross examination of the reproductive tract, the uterine body was absent, apparently never formed. In its place, a cord-like piece of tissue was identified as an aplastic/dysplastic remnant, connecting the cervix and right uterine horn. The tip of the cord-like piece branched into 5 string-like pieces of tissue, 1 of which was connected to the region dividing the left and right uterine horns. Both the uterine horns were dilated markedly revealing hydrometra. Histologically, uterine body remnant tissues from the endometrium, myometrium, and perimetrium were detected in proximal and distal parts of the uterine body. The string-like piece of tissue connecting the uterine body remnant and the uterine horn consisted of a round cluster of smooth muscle cells surrounding a central core of adipose tissue with blood vessels. It was concluded that the hydrometra observed in both uterine horns was induced by an obstruction resulting from segmental aplasia in the uterine body. This is the first known report of segmental aplasia in the uterine body of a bitch.
Oh
Ki-Seok
KS
Laboratories of Obstetrics, College of Veterinary Medicine, Chonnam National University, Gwangju, South Korea.
Son
Chang-Ho
CH
Kim
Bang-Sil
BS
Hwang
Shun-Shin
SS
Kim
You-Jung
YJ
Park
Su-Jin
SJ
Jeong
Jae-Ho
JH
Jeong
Cheol
C
Park
Sung-Hee
SH
Cho
Kyoung-Oh
KO
D000818:Animals; D004283:Dog Diseases / Q000097:blood / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D004285:Dogs; D004958:Estradiol / Q000097:blood; D005260:Female; D007044:Hysterectomy / Q000662:veterinary; D011374:Progesterone / Q000097:blood; D014463:Ultrasonography; D014591:Uterine Diseases / Q000097:blood / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery
D011374:Progesterone; D004958:Estradiol