Ted Rosen, MD

May 01, 2013

Histopathology showed this neoplasm to be a seborrheic keratosis: it might well have been a hypertrophic actinic keratosis, melanoma, or superficial basal or squamous cell carcinoma.

March 27, 2013

This patient wonders whether the insect he found on his headboard might be responsible for the clusters of pruritic, crusted papules on his legs. This turned out to be a bed bug.

March 26, 2013

The areas that contained linear erythema, punctuated by stippled pigmentation, and a small round area of stippled pigmentation were biopsied: both showed pigmented basal cell carcinoma.

March 26, 2013

This new-onset “growth” was removed and shown to be a solitary neurofibroma, which is not an indication of any of the genodermatoses marked by a multiplicity of such neoplasms.

March 19, 2013

Biopsy of the 3 red “spots” in close proximity showed lichenoid keratosis-a benign lesion, probably related to seborrheic keratosis, which often mimics skin cancer.

March 15, 2013

While it might be tempting to dismiss this as a picker's nodule, lesion's thickness suggested the need for a biopsy, which revealed that the lesion was an infiltrative, invasive basal cell carcinoma. The lesson? Never hesitate to biopsy when the slightest uncertainty exists as to the correct diagnosis.

March 12, 2013

The predominantly infraorbital erythema and swelling suggested that this rash was related to a material that was being placed in the eyes and dripping from them. Patch testing showed that the patient was allergic to the preservative in the eyedrops she had been using.

March 09, 2013

The translucent papule on the upper lip has a few small blood vessels that traverse its surface. These are morphologic features of basal cell carcinoma, a presumptive diagnosis that was confirmed by biopsy.

March 07, 2013

The redness on this woman's nose represents fairly severe photodamage with extensive actinic keratosis. Use of a topical therapy to achieve clearance of a field of actinic damage can be done with imiquimod, 5-fluorouracil, or ingenol mebutate creams, or diclofenac gel.

February 23, 2013

Cutaneous horns can arise on top of: seborrheic keratosis (as in this patient’s case), actinic keratoses, warts, basal and squamous cell carcinomas. Therefore, the lesion-and especially the base-must be submitted for pathologic diagnosis.