Case Report

A feather cyst causing vertebral bone lysis and spinal cord compression in a Lohmann Brown layer

Alaster Samkange, Borden Mushonga, Erick Kandiwa, Alec S. Bishi, Basiamisi V.E. Segwagwe, Erdwin Muradzikwa
Journal of the South African Veterinary Association | Vol 91 | a1758 | DOI: https://doi.org/10.4102/jsava.v91i0.1758 | © 2020 Alaster Samkange, Borden Mushonga, Erick Kandiwa, Alec S. Bishi, Basiamisi V.E. Segwagwe, Erdwin Muradzikwa | This work is licensed under CC Attribution 4.0
Submitted: 04 November 2018 | Published: 06 February 2020

About the author(s)

Alaster Samkange, Department of Production Animal Clinical Studies, School of Veterinary Medicine, University of Namibia, Windhoek, Namibia
Borden Mushonga, School of Veterinary Medicine, University of Namibia, Windhoek, Namibia
Erick Kandiwa, Department of Production Animal Clinical Studies, School of Veterinary Medicine, University of Namibia, Windhoek, Namibia
Alec S. Bishi, Department of Population Health, School of Veterinary Medicine, University of Namibia, Windhoek, Namibia
Basiamisi V.E. Segwagwe, Department of Biomedical Sciences, Faculty of Medicine, University of Botswana, Gaborone, Botswana
Erdwin Muradzikwa, Department of Production Animal Health, School of Veterinary Medicine, University of Namibia, Windhoek, Namibia


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Abstract

A feather cyst in the cervical region which, through complications of inward growth, resulted in compression of the cervical spinal cord of a Lohmann Brown layer is described. It is postulated that expansion of the cyst exerted pressure on the adjacent cervical vertebra and through bone lysis created an opening through which the cyst protruded, thereby exerting pressure on the spinal cord. The affected spinal cord segment was reduced to a fifth of its normal diameter. The bird most likely died of starvation because of limb and neck paralysis and disorientation. Although the cause of the feather cyst was not conclusively identified, moulting and trauma could have triggered its formation and subsequent growth.

Keywords

Lohmann Brown layer; spinal cord compression; feather cyst; Neudamm; Namibia

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