A clinical case: Vitamin C-responsive dermatosis in a Holstein native cross bull calf

A male pony foal aged 2 days, reportedly not passing urine since birth and showing moderate signs of colic, was presented for treatment. The clinical examination revealed moderate tachycardia, tachypnea, and mild abdominal distension. Uroperitoneum was confirmed by peritoneocentesis and abdominal fluid-to-serum creatinine ratio (>2:1). After stabilization of the patient, tube cystotomy was performed using infusion set tubing to bypass the urine, allowing the tear on the caudodorsal wall of the bladder to heal itself without suturing. The foal resumed normal urination on day 6 and the catheter was removed 3 days later. Complications were not detected during the 3-month observation period.