Charles E. Crutchfield III, MD

September 14, 2005

A 63-year-old woman who was on long-term hemodialysis because of diabetic end-stage renal disease had a 7-month history of waxing and waning papules and plaques on the front of both legs. The asymptomatic multiple, discrete, slightly erythematous, round to oval lesions ranged from 5 mm to 3 × 4 cm. Several had heaped-up borders and contained central crust and keratotic debris; others were superficial ulcers with central eschars. The lesions improved only slightly following twice-daily application of a superpotent topical corticosteroid preparation.

September 14, 2005

A 55-year-old-man complained of joint stiffness and red, mildly tender plaques on his fingers. He had recently sustained a trauma to the hand while at his job as a fish handler. The condition was diagnosed as erysipeloid-a skin infection caused by the gram-positive bacillus Erysipelothrix rhusiopathiae.

September 14, 2005

The painless lump on this 30-year-old woman's lip is a mucous cyst, or mucocele-the result of mucus retention within a salivary gland due to trauma or obstruction of a duct. This asymptomatic, dome-shaped, translucent, blue-white cyst is usually located on the inner surface of the lower lip or on the floor of the mouth.

September 14, 2005

A 16-year-old boy removed a small sliver of wood from the palm of his hand with a pocket knife. However, the fledgling “surgeon” created a small puncture wound during this operation. Over the next month, a small, moist, friable papule grew at the site.

September 14, 2005

A 47-year-old woman from Southeast Asia presented with erythematous, asymmetric, anesthetic, sharply marginated plaques on her lower arms and hands. Because this patient had emigrated from a tropical climate, leprosy was suspected.

September 14, 2005

This lesion erupted on a 58-year-old man's right palm, and several tense bullae also were visible on the trunk. The patient complained of mild pruritus. He had no history of similar lesions. A routine skin biopsy was performed, and the diagnosis of hemorrhagic bullous pemphigoid was made.

September 14, 2005

During a routine skin cancer screening, yellowed, thickened, leathery skin was noted on the posterior neck of a 73-year-old retired construction worker. Colloquially, this condition is called “sailor's skin” or “farmer's skin” and is seen in persons who have had long-term exposure to the sun. It is known clinically as cutis rhomboidalis nuchae, because the well-defined furrows in the skin resemble an irregular rhomboidal pattern.

September 14, 2005

An otherwise healthy 4-year-old boy was brought for evaluation of a mildly pruritic rash, which had been present for approximately 8 months. The developmental history of the eruption was equivocal, and the child's mother reported no aggravating or ameliorating factors.

September 14, 2005

A 41-year-old man sought treatment of the rough, intensely itchy patch on the dorsum of his left foot and lateral ankle. There were no other similar plaques on his body.

September 14, 2005

A 17-year-old high school athlete was anxious about this new “mole” that appeared on the heel of his right foot. His concern was prompted by the recent diagnosis of melanoma in his aunt.