An aged bull with concurrent thyroid C cell carcinoma, adrenal pheochromocytoma and pituitary chromophobe adenoma.
A Japanese Black bull aged 20 years died following progressive loss of the body weight. Pathological examination disclosed multiple endocrine tumors including thyroid C cell carcinoma with metastases to the cervical lymph nodes and lung, adrenal pheochromocytoma and pituitary chromophobe adenoma in the pars distalis. The serum calcium content was as mildly low as 8.0 mg/dl at the terminal stage. The bull had daily ingested the ration containing 1.9 times the recommended calcium amount for 8 years and 120,000 units of vitamin D(3) for 5 years prior to death. The long-term dietary intake of moderately excessive calcium with vitamin D(3) might be related to the pathogenesis of the thyroid C cell carcinoma.
Seimiya
Yukio M
YM
Iwate Prefecture Central Livestock Hygiene Service Center, Takizawa-mura, Iwate, Japan. yukio-seimiya@pref.iwate.jp
Takahashi
Maki
M
Furukawa
Takehiro
T
Mizutani
Keishi
K
Kimura
Kumiko
K
Haritani
Makoto
M
D000236:Adenoma / Q000473:pathology / Q000662:veterinary; D000310:Adrenal Gland Neoplasms / Q000150:complications / Q000473:pathology / Q000662:veterinary*; D000818:Animals; D002116:Calcitonin / Q000378:metabolism; D002136:Calcium, Dietary / Q000008:administration & dosage / Q000009:adverse effects*; D002277:Carcinoma / Q000473:pathology / Q000662:veterinary; D002417:Cattle; D002418:Cattle Diseases / Q000473:pathology*; D002762:Cholecalciferol / Q000008:administration & dosage / Q000009:adverse effects; D008297:Male; D009377:Multiple Endocrine Neoplasia; D010673:Pheochromocytoma / Q000150:complications / Q000473:pathology / Q000662:veterinary*; D010911:Pituitary Neoplasms / Q000150:complications / Q000473:pathology / Q000662:veterinary*; D013964:Thyroid Neoplasms / Q000150:complications / Q000473:pathology / Q000662:veterinary*
D002136:Calcium, Dietary; D002762:Cholecalciferol; D002116:Calcitonin