Extralobar pulmonary sequestration in two pinniped species

The Journal of Veterinary Medical Science

Kennichi WATANABE¹  Wataru GOSHIMA²  Yoko GOTO²  Kaoru KOHYAMA³  Kenji OCHIAI³  Masanobu GORYO³  Yoshiyasu KOBAYASHI³  Noriyuki HORIUCHI⁴  Jun SASAKI⁴  Shotaro NAKAGUN⁴  Hirotaka WATANABE⁵  Yumi KOBAYASHI⁶ 

[1] Graduate School of Fisheries Sciences, Hokkaido University, Hakodate, Hokkaido 041-8611, Japan;Izu-Mito Sea Paradise, Numazu, Shizuoka 410-0224, Japan;Laboratory of Veterinary Pathology, Iwate University, Morioka, Iwate 020-8550, Japan;Laboratory of Veterinary Pathology, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan;United Graduate School of Veterinary Sciences, Gifu University, Gifu, Gifu 501-1193, Japan;Wakkanai Fisheries Research Institute, Hokkaido Research Organization, Wakkanai, Hokkaido 097-0001, Japan

关键词: congenital anomaly;    cystic mass;    ectopic lung;    extralobar pulmonary sequestration;    pinniped;   

DOI  :  10.1292/jvms.17-0429

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

Two cases of extralobar pulmonary sequestrations from a walrus (Odobenus rosmarus) and a Steller sea lion (Eumetopias jubatus) are described in the present study. Grossly, an independent, soft unilocular cystic mass was found within the abdominal cavities of both animals, adherent to the diaphragm in O. rosmarus and attached to the cardia of the stomach in E. jubatus. Histopathologically, the cysts were lined by pseudostratified ciliated columnar epithelium with abundant goblet cells, while the wall comprised of glands, hyaline cartilage, bronchiole- and alveolus-like structures, smooth muscles, and large, well-developed elastic and muscular arteries. The pinniped cases presented are exceptionally rare and to the best of the authors’ knowledge, marks the first descriptions of this congenital anomaly in wildlife.

【 授权许可】

Unknown