An 8 yr old, intact male Shiba Inu was presented with loose stool, polydipsia, hematuria, vomiting, and anorexia. On abdominal ultrasonography, numerous nodules were detected in the hepatic parenchyma distributed diffusely throughout all lobes. Excisional biopsy of one of the nodules was performed via exploratory laparotomy. A histopathological diagnosis of the lesion was carcinoid, and the tumor cells stained positive to chromogranin A and gastrin. The serum gastrin level of the dog was 45,613 pg/mL (reference range: 160–284). In addition to medical treatment with omeprazolec and famotidinee, suppression of gastrin secretion was attempted with octreotide acetate. A test dose of octreotide acetate significantly decreased the serum gastrin level to approximately one third of the baseline in 2 hr and the effect lasted approximately for 6 hr. On day 21, treatment with sustained-release formulation of octreotide acetatea (5 mg intramuscular, q 4 wk) was initiated. The serum gastrin concentration gradually decreased over 32 days and then progressively increased in parallel with the progression of the hepatic nodules. The dog gradually developed recurrence of initial clinical signs, and was lost to follow-up on day 510.
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November/December 2015
Case Reports|
November 01 2015
Treatment of Gastrin-Secreting Tumor With Sustained-Release Octreotide Acetate in a Dog
Sangho Kim, DVM;
Sangho Kim, DVM
Department of Veterinary Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Hokkaido, Japan.
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Kenji Hosoya, DACVR, ACVIM (Oncology);
Kenji Hosoya, DACVR, ACVIM (Oncology)
Department of Veterinary Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Hokkaido, Japan.
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Satoshi Takagi, DVM, PhD;
Satoshi Takagi, DVM, PhD
Department of Veterinary Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Hokkaido, Japan.
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Masahiro Okumura, DVM, PhD
Masahiro Okumura, DVM, PhD
Department of Veterinary Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Hokkaido, Japan.
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J Am Anim Hosp Assoc (2015) 51 (6): 407–412.
Citation
Sangho Kim, Kenji Hosoya, Satoshi Takagi, Masahiro Okumura; Treatment of Gastrin-Secreting Tumor With Sustained-Release Octreotide Acetate in a Dog. J Am Anim Hosp Assoc 1 November 2015; 51 (6): 407–412. doi: https://doi.org/10.5326/JAAHA-MS-6270
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