Hemothorax Secondary to Rupture of an Aneurysmal Structure of Thromboembolism-Related Collateral Vasculature in a Dog.

Objective: To describe hemothorax secondary to the spontaneous rupture of an aneurysmal dilation of a collateral vascular structure potentially resulting from chronic pulmonary thromboembolism in a dog.

Case Summary: An 11-year-old male neutered Schnauzer mix weighing 12.6 kg was presented to the emergency service of a veterinary specialty referral hospital for an episode of collapse.

Computed tomography of testicular torsion in a juvenile dog with unilateral cryptorchidism.

A 14-week-old male unilaterally cryptorchid Clumber spaniel was presented for acute lethargy. Physical examination revealed abdominal pain, and a single testis was palpated in the scrotum. Abdominal ultrasound and computed tomography (CT) revealed a poorly vascularized, ovoid structure immediately caudal to the left kidney with scant regional peritoneal effusion.

Ultrasonography and CT of the vas deferens in a neutered male dog with chronic exogenous estrogen exposure.

A 2-year-old male neutered Rat Terrier was presented for alopecia, recurrent urinary tract infections, and urinary incontinence. Abdominal ultrasound and CT identified a thin, tubular, paired structure arising from the craniodorsal aspect of an enlarged, cystic prostate. An atypical uterus masculinus was initially suspected, however it was then identified that the patient had chronic exogenous estrogen exposure, and surgical resection and histopathology was consistent with an enlarged and inflamed vas deferens.