Pelvic lymphoma as a cause of urethral compression in a mare.

This study explores the case of a 6-year-old mare with urinary complications caused by a pelvic lymphoma that obstructed the urinary outflow and increased the risk of renal failure, leading to euthanasia due to the poor prognosis.

Case Presentation

• The study revolves around a 6-year-old mare presented for examination due to symptoms of dysuria and pollakiuria, indicating difficulty and frequency in urination, respectively.
• Upon evaluation, a pelvic mass was identified as the cause of obstruction in urinary outflow in the mare.
• This obstruction resulted in the difficulty and frequency in urination, symptoms usually associated with urinary tract infections and other renal or urinary disorders.

Clinical Findings and Diagnosis

• In addition to the issues with urination, the mare also showed evidence of renal failure, a serious condition where the kidneys stop functioning properly.
• Renal failure in horses could have a variety of causes such as severe dehydration, prolonged low blood pressure, kidney infection or inflammation, and urinary obstruction as in this case. The abnormalities in the mare’s urination pointed towards the renal failure being related to the discovered pelvic mass.

Outcome and Autopsy

• Given the mare’s poor prognosis due to the severity of the renal failure and the complication caused by the pelvic mass, the decision was made to euthanize the animal.
• An autopsy carried out after euthanasia confirmed the presence of a pelvic lymphoma, a type of cancer that arises in the lymphatic cells.
• This lymphoma had surrounded and compressed the urethra, leading to the observed urinary obstruction. The pressure exerted by the lymphoma most likely worsened the mare’s condition and significantly contributed to the renal failure.

Significance

• This study effectively highlights the potential complications that can arise due to pelvic lymphomas in horses, such as urinary obstructions and subsequent renal failures.
• It emphasizes the importance of thorough examination and evaluation in cases with urinary complications to identify any underlying serious medical conditions, like a pelvic lymphoma in this case.