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Diphallia in a Mixed-Breed Puppy: Case Report
Rebecca Laube1, Alysa Cook1, Kevin Winkler1
1From the BluePearl Veterinary Partners, Franklin, Tennessee (R.L.); and BluePearl Georgia Veterinary Specialists, Sandy Springs, Georgia (A.C., K.W.).
Journal of the American Animal Hospital Association
|August 10, 2017
Summary
A rare canine congenital condition, diphallia (double penis), was surgically treated in an 8-month-old dog. This case is unique as it lacked other associated congenital abnormalities, offering new insights into this rare condition.
Area of Science:
- Veterinary Medicine
- Canine Urology
- Congenital Abnormalities
Background:
- Diphallia, a rare congenital condition characterized by the presence of two penises, is infrequently reported in veterinary literature.
- This condition can be associated with other significant congenital abnormalities, complicating diagnosis and treatment.
Observation:
- An 8-month-old intact male mixed-breed dog presented with diphallia and paraphimosis of a nonfunctional accessory penis.
- Diagnostic workup including bloodwork, abdominal ultrasound, and retrograde urethrogram revealed no other structural abnormalities.
Findings:
- Surgical excision of the accessory penis was successfully performed.
- This case represents one of only three reported instances of diphallia in dogs in the English literature.
- Notably, this is the sole reported case of canine diphallia without any concurrent congenital abnormalities.
Implications:
- This case expands the understanding of diphallia in canines, highlighting its potential presentation without other developmental defects.
- The review of veterinary and human literature on diphallia provides a broader context for this rare condition.
- Further investigation into the etiology and varied presentations of diphallia is warranted.

