Ted Rosen, MD

December 21, 2012

Chlamydia trachomatis, serovar L2b-a recently discovered microbe-was the cause of atypical lymphogranuloma venereum in this HIV-positive patient.

December 19, 2012

This multi-factorial eruption requires topical or systemic antifungal treatment in conjunction with broad-spectrum antibacterial therapy, topical desiccating maneuvers (such as Burrow’s soaks), and discontinuation of OTC interventions that might be worsening the problem.

December 11, 2012

Squamous cell carcinoma is the most common tumor of the penis. Melanoma, sarcoma, and (rarely) basal cell carcinoma and cutaneous metastasis also occur here.

December 11, 2012

The confluence of small, scaly, hyperpigmented patches on the chest (and often neck and upper back) is classic for tinea versicolor.

December 11, 2012

These firm, pigmented plaques, in a young African American, are most likely cutaneous sarcoidosis. This diagnosis was verified by biopsy.

December 11, 2012

The patient was a traveling salesman and was concerned that the lesions were bedbug bites. The diagnosis of herpes simplex virus infection was confirmed by viral “culture.” What was this patient's condition?

December 05, 2012

There is a rather large erythematous patch/plaque present. However, an exophytic, verrucous nodule is visible at the inferior border of the tumor. Biopsy of the flatter portion of this lesion disclosed squamous cell carcinoma in-situ, while biopsy of the nodule revealed invasive squamous cell carcinoma.

November 30, 2012

One of two common presentations of tinea pedis, this morphology is more common in those whose interdigital space is tight, leading to moisture retention and maceration. Diligent use of any topical antifungal will clear this.

November 28, 2012

The 2% preparation of an allylamine antifungal is a new addition to the menu of available topical agents. It has the advantage of once-daily dosing and shorter course of therapy.

November 09, 2012

A 57-year-old man presented for medical evaluation because of the presence of a "funny looking lump" on the lateral aspect of his right upper thigh.