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  • Title: Treatment and outcomes of five dogs with intrathoracic migration of porcupine quills.
    Author: Walker MA, Hoddinott KL, Ogilvie AT.
    Journal: Vet Surg; 2022 Nov; 51(8):1257-1264. PubMed ID: 35830156.
    Abstract:
    OBJECTIVE: To describe the perioperative findings and outcomes in dogs that underwent exploratory thoracotomy following porcupine quill migration and report (1) the use of traction alone for the removal of superficial quills in the pulmonary parenchyma, and (2) the use of exploratory pericardiotomy for the incidental identification of cardiac quills. ANIMALS: Five client-owned dogs. STUDY DESIGN: Short case series. METHODS: Medical records of dogs with pneumothorax or pericardial effusion secondary to porcupine quill migration from January 2019 to January 2022 were reviewed. Advanced imaging and a median sternotomy were performed in each dog. Demographics, preoperative findings, surgical treatment, and outcome were recorded. RESULTS: Pulmonary quills were treated with gentle traction or lung lobectomy. The intraoperative palpation or appearance of the pericardium prompted pericardiotomy in three dogs, exposing epicardial and intravascular quills. No evidence of these quills was detected on preoperative advanced imaging or on gross appearance of the pericardium. Quills were removed with a combination of gentle traction, purse-string sutures, and mattress sutures. Pneumothorax and pericardial effusion resolved postoperatively in all dogs. All dogs survived to discharge. CONCLUSION: Traction allowed removal of quills that were superficially attached to the pulmonary parenchyma without the need for subsequent lobectomy. Epicardial and myocardial quills were detected following pericardiotomy in three dogs despite the absence of quills grossly penetrating the pericardium. Preoperative imaging did not allow consistent detection of quills.
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