ABSTRACT
BACKGROUND: Mammary gland tumors are the most common tumors in sexually intact female dogs; however, they are rare in male dogs. This study was conducted to investigate the relationship between sexual hormones and mammary gland tumors in a male dog. CASE PRESENTATION: A 13-year-old, intact male Cocker Spaniel presented to the Veterinary Teaching Hospital of Kangwon National University, Republic of Korea, with an acute right ruptured caudal abdominal mass. Physical examination revealed a 14 × 14 cm ruptured mass in the right caudal abdomen, as well as a 1.5 × 1.5 cm mass in the first right mammary gland. The estrogen and progesterone concentrations in serum were within normal levels. Total mastectomy was done on the right side mammary glands. Following surgery, the site was fully recovered; however, a mass that had grown to 2 × 2 cm was found in the left fifth mammary gland and a testis tumor was also found over the period of 4 months. Mastectomy was performed on the left caudal mammary gland and castration was also performed. After the final surgery, the dog fully recovered. Histopathological examination of all three masses revealed high grade mammary adenocarcinoma in the mammary gland and the testis was diagnosed as Leydig cell adenoma. Immunohistochemical analysis revealed that the estrogen and progesterone receptors were expressed on limited cells in mammary and testis tumors. CONCLUSION: The results of this study suggest that mammary tumors and testes tumors can occur in male dogs without relationship to female sexual hormone.
Subject(s)
Adenocarcinoma/veterinary , Leydig Cell Tumor/veterinary , Mammary Neoplasms, Animal/pathology , Mammary Neoplasms, Animal/surgery , Testicular Neoplasms/veterinary , Adenocarcinoma/pathology , Adenocarcinoma/surgery , Animals , Dogs , Estrogens/blood , Leydig Cell Tumor/secondary , Leydig Cell Tumor/surgery , Male , Mammary Glands, Animal/pathology , Orchiectomy/veterinary , Progesterone/blood , Republic of Korea , Testicular Neoplasms/secondary , Testicular Neoplasms/surgery , Treatment OutcomeABSTRACT
An eighteen-month-old female Humboldt penguin (Spheniscus humboldti) that was 50 cm in length and 4.5 kg in weight was presented with anorexia and vomiting. The hematological and blood biochemical profiles revealed no remarkable findings, and no Salmonella, Shigella or Vibrio spp. were isolated from the fecal culture. However, radiographic imaging revealed a long linear foreign body presenting from the lower esophagus to the stomach. To retrieve this foreign body, flexible endoscopic extraction was performed using flexible rat tooth grasping forceps. A long bamboo stick (29 × 1 cm) was removed from the stomach, and the penguin fully recovered.
