Journal
EYE
Volume 37, Issue 5, Pages 875-884Publisher
SPRINGERNATURE
DOI: 10.1038/s41433-022-02306-w
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This review discusses and summarizes the risks and radiological features of PNI in periocular SCC, and introduces the optimal diagnostic and treatment methods, including surgical excision, radiotherapy, and immunotherapy as a novel treatment alternative.
Perineural invasion (PNI) in cutaneous squamous cell carcinoma (SCC) of the periocular region is a prognostic marker of adverse tumour outcomes. PNI carries a well-established risk of tumour recurrence, regional metastasis and higher likelihood of mortality. This review will explore and stratify the risks conferred by histological PNI parameters. The radiological features of perineural spread (PNS) and the imaging sequences that delineate these findings will also be highlighted. Surgical excision with en face margin control is the preferred technique for achieving histological clearance. Adjuvant radiotherapy improves treatment outcomes in the setting of concomitant high-risk features. For locally advanced or metastatic cutaneous SCC, immunotherapy represents a novel treatment alternative. This review will provide an algorithm for the diagnosis and management of periocular SCC with PNI and PNS.
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