著者

Tomoko TAKAHASHI Hitoshi SHIOZAWA Teita ISHIZAKI Kazuki OKADA Hirotaka KONDO

出版者

JAPANESE SOCIETY OF VETERINARY SCIENCE

雑誌

Journal of Veterinary Medical Science (ISSN:09167250)

巻号頁・発行日

pp.23-0136, (Released:2023-08-08)

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An 11-year-old spayed female French bulldog was referred on suspicion of nasal tumor. Anaplastic oligodendroglioma in the olfactory bulb that was suspected to have invaded the nasal cavity was diagnosed from imaging and histopathology. Metastasis to cervical lymph nodes was suspected, with no other metastases identified. The brain-to-nasal lesion and lymph nodes were treated with hypo-fractionated radiation therapy. Nasal congestion soon resolved. About 3 months later, follow-up computed tomography revealed multiple hepatic and splenic masses, which were cytologically suspected as metastatic oligodendroglioma. Nimustine, followed by toceranib phosphate, seemed to have no effect, and the dog died on day 167. Postmortem examination revealed the primary tumor disappearance and systemic metastases. Canine oligodendroglioma can grow outside the cranial vault, and systemically metastasize.

著者

Keita NAMIKI Kazuki OKADA Ryo SHINDO Yumiko KAGAWA

出版者

JAPANESE SOCIETY OF VETERINARY SCIENCE

雑誌

Journal of Veterinary Medical Science (ISSN:09167250)

巻号頁・発行日

vol.85, no.4, pp.420-424, 2023 (Released:2023-03-30)

参考文献数

27

被引用文献数

1

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A 2-month-old female mixed cat was emaciated due to dysphagia, and inspection of the mouth revealed a 2 cm pedunculated mass elongated from the palate, which occupied the oral cavity. The mass was surgically removed, and histopathological examination revealed that the tumor was composed of three germ cell layers: ectodermal (skin and skin appendages), mesodermal (cartilaginous and osseous structures), and endodermal (glandular and respiratory mucosa) tissues. An immature teratoma was diagnosed because of the presence of immature neuroectodermal tissues, and the presence of nephroblastic components was a characteristic finding in this case. This is the first report of an oropharyngeal teratoma in cats and the first case of an immature teratoma with nephroblastic components in a domestic species.

著者

Kazuki OKADA Yumiko KAGAWA

出版者

JAPANESE SOCIETY OF VETERINARY SCIENCE

雑誌

Journal of Veterinary Medical Science (ISSN:09167250)

巻号頁・発行日

pp.19-0037, (Released:2019-03-12)

被引用文献数

2

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A 9-year-old castrated male cat presented with sudden onset of paralysis in four limbs. Magnetic resonance imaging revealed an intramedullary lesion at C3, and lesions in the vermis and right hemisphere of the cerebellum, which were hyperintense on T2-weighted imaging. The cat was euthanized, and postmortem examination was performed. Grossly, transverse sectioning of the spinal cord revealed areas of malacia within the gray matter extending from C2 to C3. Histologically, the ventral spinal artery, the spinal intramedullary arteries and the arterioles of arachnoid in the cerebellum contained fibrocartilaginous emboli confirmed by metachromatic staining with toluidine blue. To our knowledge, this is the first report of fibrocartilaginous embolism involving both the cerebellum and cervical spinal cord in a cat.

著者

Kazuki OKADA Shinjiro AMANO Yoshio KAWAMURA Yumiko KAGAWA

出版者

公益社団法人 日本獣医学会

雑誌

Journal of Veterinary Medical Science (ISSN:09167250)

巻号頁・発行日

pp.15-0177, (Released:2015-05-11)

被引用文献数

7

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An 8-year-old, spayed, female Shiba dog was presented to a referring veterinarian with a complaint of chronic diarrhea and anorexia. Ultrasound and radiographs revealed an irregular mass in the pelvic cavity. The mass and the affected section of colon were surgically removed. Histopathological examination revealed multifocal coalescing granulomas and effaced intestinal structures. Central necrotic debris surrounded by multinucleated giant cells, lymphocytes, plasma cells and neutrophils was observed. Numerous, irregularly branched hyphae with pale basophilic, thin walls and occasional bulbous enlargements at the tips were present. Polymerase chain reaction identified Basidiobolus ranarum, successfully confirming a definitive diagnosis of basidiobolomycosis. To the best of our knowledge, this is the first report of intestinal basidiobolomycosis in a dog.