Branchial Tumor in a Blue Striped Grunt ( Haemulon sciurus )

Branchial Tumor in a Branchial Tumor in a Blue Striped Grunt Blue Striped Grunt ((Haemulon sciurusHaemulon sciurus))

Jason Kimbro, DVMJason Kimbro, DVMClinical Instructor, PathologyClinical Instructor, Pathology

Disney’s Animal Programs/UF College of Veterinary MedicineDisney’s Animal Programs/UF College of Veterinary Medicine

Presented at SEVPAC 2008 – Presented at SEVPAC 2008 – Permission granted for use on Permission granted for use on

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Signalment:Signalment: Adult female Blue striped gruntAdult female Blue striped grunt

Hx: Hx: Large mass at opening of the left operculumLarge mass at opening of the left operculum Aspirate revealed neoplastic cells Aspirate revealed neoplastic cells Biopsy revealed an invasive thyroid tumorBiopsy revealed an invasive thyroid tumor

D08-62 Blue Striped GruntD08-62 Blue Striped Grunt





D08-62 Blue Striped GruntD08-62 Blue Striped Grunt

NX: NX: Large mass, caudal left branchial cavityLarge mass, caudal left branchial cavity

• Mass adherent to body wall and branchial archesMass adherent to body wall and branchial arches Nephroliths in the caudal kidneyNephroliths in the caudal kidney

Histo: Histo: 1.1. Follicular carcinoma, thyroid glandFollicular carcinoma, thyroid gland

2.2. Nephrocalcinosis, chronic, multifocal severe, with Nephrocalcinosis, chronic, multifocal severe, with tubular necrosis and granulomatous inflammation, tubular necrosis and granulomatous inflammation, caudal kidney.caudal kidney.Presented at SEVPAC 2008 – Presented at SEVPAC 2008 –

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DiscussionDiscussion Neoplasia is rare in fishNeoplasia is rare in fish

Thyroid tumors – one of most commonThyroid tumors – one of most common• Locally invasiveLocally invasive• Metastasis is rareMetastasis is rare• Originate at ventral branchial archOriginate at ventral branchial arch

NephrocalcinosisNephrocalcinosis Systemic acidosisSystemic acidosis Tubular CaTubular Ca++++ salt precipitation salt precipitation Tubuloepithelial degeneration/necrosisTubuloepithelial degeneration/necrosis Secondary granulomatous inflammationSecondary granulomatous inflammation



ReferencesReferences1.1. Harada, T, Itoh H, Hatanaka, J, Kamiya, S, and Enomoto, M (1996). Harada, T, Itoh H, Hatanaka, J, Kamiya, S, and Enomoto, M (1996).

A morphological study of a thyroid carcinoma in a medaka, Oryzias A morphological study of a thyroid carcinoma in a medaka, Oryzias latipes (Temminck & Schlegel), latipes (Temminck & Schlegel), Journal of Fish DiseasesJournal of Fish Diseases 19(2): 271- 19(2): 271-277.277.

2.2. Roberts RJ (2004). Fish Pathology. W.B. Saunders, Philadelphia, Roberts RJ (2004). Fish Pathology. W.B. Saunders, Philadelphia, PA.PA.

3.3. Smart, GR, Knox, D, Harrison, JG, Ralph, JA, Richards, RH, and Smart, GR, Knox, D, Harrison, JG, Ralph, JA, Richards, RH, and Cowey, CB (1979). Nephrocalcinosis in rainbow trout Cowey, CB (1979). Nephrocalcinosis in rainbow trout Salmo Salmo gairdneri gairdneri Richardson; the effect of exposure to elevated CO2 Richardson; the effect of exposure to elevated CO2 concentrations, concentrations, Journal of Fish DiseasesJournal of Fish Diseases 2(4): 279-289. 2(4): 279-289.

4.4. Stoskopf MK (1993). Fish Medicine. W.B. Saunders, Philadelphia, Stoskopf MK (1993). Fish Medicine. W.B. Saunders, Philadelphia, PA.PA.



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Branchial Tumor in a Blue Striped Grunt ( Haemulon sciurus )