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Published on: May 2, 2017
Retrograde ejaculation associated spontaneous sperm cystolithiasis in four rhesus macaques (Macaca mulatta)
Sanjeev Gumber1, Cynthia L Courtney, Karen R Strait
1Division of Pathology, Yerkes National Primate Research Center, Emory University, 954 Gatewood Road NE, Atlanta, GA 30329, USA.
Summary
This study reports rare spontaneous sperm cystolithiasis in four rhesus macaques, a condition involving sperm calculi formation. Ulcerative urethritis was identified as the likely cause of this unusual condition.
Area of Science:
- Veterinary Pathology
- Reproductive Biology
- Primate Medicine
Background:
- Retrograde ejaculation (RE) is known in humans and animals, but RE with subsequent sperm calculi is rare.
- Spontaneous sperm cystolithiasis, the formation of calculi from sperm, is highly unusual, especially without prior electroejaculation.
- This report focuses on the clinical and pathological findings of this rare condition in non-human primates.

