Surgical and histopathological study of quadruple nostrils in a Holstein calf

A female Holstein calf was presented with quadruple nostrils. In the normal nose, one of the nostrils was normal and another had an abnormal flexible structure in the upper region of the nose. The extra nose included one tube-like structure, two accessory nostrils and narrow vestibules. Complete surgical removal was selected. Histopathologically, a normal cutaneous region of nostril structure and a small region of immature respiratory tissue were observed. The cutaneous region of the rostral portion was lined by a thick keratinised stratified squamous epithelium. At the caudal cutaneous region, the epithelium was thinner. Collagen fibres, vessels, serous glands, muscle and cartilage were seen in the submucosa. The epithelium lining the immature respiratory region was pseudostratified columnar. No recurrence or wound healing complication was observed 5 months following the surgical procedures.