Diagnosis and management of subungual and periungual verruca: A clinical review.

Nail unit verruca is the most common nail tumor encountered in clinical practice and may be highly distressing to patients due to reduced functionality, cosmesis, and stigmatization. Subungual and periungual verrucae present a challenge for treatment compared to cutaneous warts of other sites and recurrence rates are high. The risk of spread to other skin and mucosal areas inherent to all warts may be increased given location on the fingertips.

Differential diagnosis of pigmented nail lesions.

The diagnosis of pigmented nail lesions is a concern for both general practitioners and dermatologists, due to the possibility of indicating nail melanoma. The origin of the dark pigmentation can be either melanocytic or non-melanocytic (fungi, bacteria, or blood), and clinical evaluation alone may not be sufficient for differentiation, requiring additional exams. Onychoscopy provides valuable information prior to biopsy.

Surgical Management of Difficult Nail Glomus Tumors.

Background: Nail glomus tumor is a well-known tumor, with well-defined clinical characteristics and surgical treatment; however, some of these lesions occur in different locations and sizes with difficult surgical resolution.

Summary: Clinical and imaging tests help in the diagnosis and tumor localization.

Key Message: Adequate surgical knowledge for these cases ensures lower rates of recurrence and nail dystrophy.