Removal of a Presumed Peripheral Cerebral Cyst via Craniectomy in a Crested Pekin Duck (Anas platyrhynchosf dom)

Abstract

A juvenile, male crested pekin duck ( Anas platyrhynchos f dom) was presented for neurologic signs suggestive of cerebellar disease. Physical examination revealed microphthalmia, erratic head movements, and ataxia. Computed tomography scan of the head and neck regions revealed 2 full-thickness skull-bone defects within the caudal portion of the cranium. The cerebellum appeared to be ventrally compressed by a homogeneous, triangular, fluid-attenuating region (0-10 Hounsfield units). A craniectomy was performed, and a presumed peripheral cerebral cyst was removed with suction and gentle dissection. No postoperative complications occurred, and the patient showed clinical improvement for 5 months after surgery. However, after 5 months, the owners elected euthanasia because of poor prognosis after finding the duck minimally responsive in a water enclosure. At necropsy, a thin-walled, epithelial structure was present in meninges and was adhered to the skull at the presumed surgical site.

Putative Mechanical Asphyxiation and Cerebral Cyst in a Sudden Death Changeable Hawk Eagle (Nisaetus chirratus)

“…Both cases presented various degree of neuronal damage and its manifestation to birds' physiology due to the encephalitis and neuronal necrosis. Massive presumed peripheral brain cyst formation was also ever reported in crested Peking duck (Anas platyrhynchos) located in meninges layer and already triggered neuronal defect (Yaw et al, 2016). In a very occasional case, brain tumour might induce cystic formation as reported in White Leghorn chicken with cerebellar teratoma (Jones, 1964).…”