[Nail disorders in daily practice].

Familiarity with common nail disorders enables the clinician to diagnose and treat nail disorders and to recognize red-flag conditions. Knowledge of the anatomy of the nail unit is essential to understand the origin of nail disorders. This article focuses on neoplasms, abnormalities of nail color and shape, infections, and inflammatory conditions of the nail unit.

Evaluation of Watchful Waiting and Tumor Behavior in Patients With Basal Cell Carcinoma: An Observational Cohort Study of 280 Basal Cell Carcinomas in 89 Patients.

Importance: Few studies have examined watchful waiting (WW) in patients with basal cell carcinoma (BCC), although this approach might be suitable in patients who might not live long enough to benefit from treatment.

Objective: To evaluate reasons for WW and to document the natural course of BCC in patients who chose WW and reasons to initiate later treatment.

Design, Setting, And Participants: An observational cohort study was performed at a single institution between January 2018 and November 2020 studying patients with 1 or more untreated BCC for 3 months or longer.