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Updated: Jan 2, 2026

Dissection and Flat-mounting of the Threespine Stickleback Branchial Skeleton
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A Branchial Cyst in a Diamond Python (Morelia spilota).

E Cloup1, C Thomas2, J E Cooper3

  • 1Department of Veterinary Medicine, The Queen's Veterinary School Hospital, University of Cambridge, Cambridge, UK.

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|December 9, 2019
PubMed
Summary
This summary is machine-generated.

A rare branchial (pharyngeal) cyst was diagnosed in a diamond python. This finding suggests considering branchial remnants for snake neck masses.

Keywords:
branchial cystdevelopmental abnormalitydiamond python

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Area of Science:

  • Veterinary Medicine
  • Herpetology
  • Developmental Biology

Background:

  • Branchial cysts are rare benign lesions resulting from abnormal development of the branchial apparatus.
  • These cysts are infrequently documented in veterinary medical literature, particularly in reptiles.

Observation:

  • A 9-year-old female diamond python (Morelia spilota) presented with a submandibular swelling.
  • Diagnostic evaluation included cytology, gross examination, and histology.

Findings:

  • The lesion was identified as a branchial (pharyngeal) cyst.
  • The cyst's features were consistent with anomalous development of the branchial apparatus.

Implications:

  • The study highlights the importance of including branchial remnants in the differential diagnosis for neck masses in adult snakes.
  • This case contributes to the limited veterinary knowledge on branchial cysts in reptilian species.