Periocular Basal Cell Carcinoma Predictors for Recurrence and Infiltration of the Orbit.

PURPOSE: To present the proportion of patients with periocular basal cell carcinoma (BCC) who underwent orbital exenteration and to evaluate the significance of the risk factors.

DESIGN: Retrospective, comparative, interventional case series.

METHODS: Data of all patients with BCC between 2008 and 2014 were reviewed for patient demographics, previous treatment options, tumor localization, and histopathologic subtype.

RESULTS: In group of 256 patients, orbital exenteration underwent 7 patients (2.7%). For 2 patients (5.1%), orbital exenteration was the first procedure performed. In the exenterated group, the most common tumor site was the medial cantus and lower eyelid, whereas in the overall group, it was the lower eyelid (P = 0.011). The proportion of patients initially treated with histopathologic result of infiltration of 1 margin was significantly higher in patients undergoing exenteration (P = 0.282). During the 7-year period observership, the authors have seen 13 recurrences (5.08%). In patients with recurrent BCC after surgery, the authors applied adjuvant high dose rate Ir brachytherapy. Neoadjuvant therapy with Vismodegib was effective in patient with biorbital infiltration after 1 side exenteration.

CONCLUSIONS: Orbital invasion may be clinically silent. Recurrence rate of BCC in our group 5% corresponds to date in the literature. The exenteration for BCC may be significantly higher when the lesion involves a medial canthal location and lower eyelid and initial surgery does not include margin-controlled excision.