Diagnosis and management of lobular capillary haemangioma (pyogenic granuloma) in an adult female lactating Bonobo (Pan paniscus)

Abstract

An adult female lactating bonobo ( Pan paniscus ) presented with an acutely enlarging skin nodule, readily susceptible to haemorrhage, on the third digit of her left foot, which was subsequently removed under anaesthesia when it had reached a diameter of approximately 10 mm. The bonobo had five-year-old and three-month-old infants, which had to be managed sensitively during the procedure. Risk management was carefully planned with the keeping team. Oral benzodiazepines were used in the dam and five-year-old infant to reduce stress, and careful planning ensured a time-efficient anaesthetic procedure. Radiographs were taken to investigate the involvement of underlying tissue, and the skin mass was removed by partial amputation of the digit including a segment of bone. Histopathology yielded a diagnosis of lobular capillary haemangioma (pyogenic granuloma). Although the clinical presentation was extremely similar to that seen in humans, the entity has not been commonly reported in apes.