Case 8 Scrotal mass in a neutered dog

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Case 8Scrotal mass in a neutered dog

• Rob Foster
• Department of Pathobiology

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Signalment and history

• 7 years old male neutered Soft Coated Wheaton
  Terrier that developed an intrascrotal mass.
• It was surgically excised.

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Macroscopic appearance
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Histology
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Histology
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And the answer is.

• Drum roll please

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Extratesticular Sertoli cell tumorin a
previously neutered dog.
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Discussion

• Recognised entity
• Doxsee AL, Yager JA, Best SJ, Foster RA (2006)
• Extratesticular interstitial and Sertoli cell
  tumors in previously neutered dogs and cats A
  report of 17 cases.
• Can Vet J 200647763766

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12 dogs with extratesticular tumours of
testicular origin
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Why?

• Autogenous transplantation
• Ectopic testicular tissue
• Environment driven differentiation
• Hyperstimulated by reduced inhibin production

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Acknowlegement

• Julie Yager and Susan Best
• YagerBest Histovet
• histological and cytological services