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  • Title: Comparing capsule exposure using extracapsular dissection with partial superficial parotidectomy for pleomorphic adenoma.
    Author: Witt RL, Iacocca M.
    Journal: Am J Otolaryngol; 2012; 33(5):581-4. PubMed ID: 22516183.
    Abstract:
    UNLABELLED: The aim of this study was to compare capsule exposure using extracapsular dissection (ECD) with partial superficial parotidectomy (PSP) for pleomorphic adenoma. PURPOSE: Long-term favorable results for recurrence and facial nerve function have been reported for ECD and PSP for parotid pleomorphic adenoma. Extracapsular dissection is distinguished from PSP in that the facial nerve is dissected in PSP but not in ECD. This article attempts to answer the following hypothesis: the margin of normal parotid tissue surrounding a parotid pleomorphic adenoma is less for ECD compared with PSP. MATERIAL AND METHODS: This is a retrospective individual case-control study. Twelve consecutive parotidectomy procedures with a final pathology report of pleomorphic adenoma were retrospectively measured for margin (the percent of capsule exposure around the tumor). In 8 highly selected patients, ECD was performed. Four parotid surgical procedures not meeting strict criteria underwent PSP and served as controls. RESULTS: The eight patients with ECD had a mean of 80% (71%-99%) of the capsule exposed. The 4 PSP procedures had 21% (4%-50%) of the capsule exposed (P < .05). CONCLUSIONS: Extracapsular dissection results in higher capsule exposure.
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