Teratoma adultum in a bitch: a case report

Abstract

This case report concerns a two year old female mongrel weighing about 25 kg which was admitted to an animal shelter. A grapefruit-sized mass was found in the animal’s left ovary during a routinely performed ovariohysterectomy. On sectioning, the mass revealed cysts containing tufts of hair in creamy white sebaceous fluid. A histological examination revealed a mixture of tissues. The tumor was diagnosed as a mature teratoma (teratoma adultum).

Giant Canine Ovarian Teratoma: Case Report

“…Regarding age, according to the literature, these tumours occur more frequently in young animals [4,5,[7][8][9][10][11]. Similar situation was found in the present study, since it is a female dog two years and nine months old.…”

Neoplasia ovariana teratogénica en canino

“…However, they reiterate that there is still no scientific evidence to provide perspectives on gestation rates and number of puppies expected by adopting this type of management. Ovariohysterectomy has been recommended by several authors (1,3,6,8,10) and it was the treatment of choice in this case due to the secondary occurrence of pyometra. Added to this is the fact that, although there are clinical treatments available for pyometra, which, in theory, would allow the maintenance of the uterus and contralateral ovary, ovariohysterectomy is still the safest and most effective treatment for pyometra (13,18), in addition to the lack of reproductive interest on the part of the tutors.…”

“…Ovarian teratomas in female-canine are commonly benign (3,6,(8)(9)(10)16). According to Blaszak et al (3) and Brum et al (6), malignant metastases can be observed in the abdominal organs, lymph nodes, lungs and bones.…”

“…Los teratomas ováricos en el canino hembra son comúnmente benignos (3,6,(8)(9)(10)16 (17). La ocurrencia descrita en el ovario izquierdo es corroborada por Drumond et al (6) y Diez-Bru et al (7), quienes afirmaron que la gónada izquierda parece estar más frecuentemente afectada.…”

“…Sin embargo, reiteran que todavía no hay evidencia científica que proporcione perspectivas sobre las tasas de gestación y el número de cachorros que se esperan al adoptar este tipo de manejo. La ovariohisterectomia ha sido recomendada por varios autores (1,3,6,8,10) y fue el tratamiento de elección en este caso debido a la aparición secundaria de piometra. A esto se añade el hecho de que, aunque existen tratamientos clínicos disponibles para la piometra que, en teoría, permiten mantener el útero y el ovario contralateral, la ovariohisterectomia sigue siendo el tratamiento más seguro y eficaz para piometra (13,18).…”