Subungual schwannoma with clinical, sonographic, and histologic correlation.

We show an unusual presentation of a schwannoma that was located in the ungual bed of the left great toe. The clinical, color Doppler ultrasound imaging, and histologic findings are shown to illustrate the case. This type of neurogenic tumor and the ultrasound presurgical imaging support should be considered when dealing with subungual tumors of the foot.

Ultrasound in-depth characterization and staging of hidradenitis suppurativa.

Background: The clinical diagnosis of fistulous tracts and recurrent fluid collections in hidradenitis suppurativa (HS) may be complex. Information on subclinical involvement and grading of severity may improve management.

Objective: To study HS lesions and evaluate the relevance of adding ultrasound (US) to the clinical examination.

Benign tumors and pseudotumors of the nail: a novel application of sonography.

Objective: The purpose of this study was to determine the scope of high-resolution sonography in the detection of benign tumors and pseudotumors of the nail unit.

Methods: We performed a retrospective study of the sonographic findings in 103 consecutive patients with benign tumors and pseudotumors of the nail that were medically derived and confirmed histologically. Statistical analysis (Student t test) was performed comparing clinical and sonographic diagnoses.