Eccrine porocarcinoma presenting as a recurrent wart.

Eccrine porocarcinoma (EPC) is an exceedingly rare sweat gland tumor most commonly seen in older patients. Diagnosis of EPC is rare, representing a small percentage of cutaneous malignancies. In the absence of established guidelines, wide local excision (WLE) has traditionally been considered the standard treatment.

Koebner phenomenon: pemphigus vulgaris following Mohs micrographic surgery.

Koebnerization of pemphigus vulgaris (PV) is an infrequently reported reaction. We present a 65-year-old man with Koebnerized pemphigus vulgaris after Mohs microscopic surgery for a basal cell carcinoma. We present this case to heighten awareness of the phenomenon in the dermatological community.

Cadaveric simulation for improving surgical training in dermatology.

Simulation models are rapidly changing medical education, especially the training of dermatology residents. Various models are available, including cadaveric simulations. Our study evaluates the impact of a cadaveric simulation on the training of dermatology residents.

The utility of full-thickness skin grafts (FTSGs) for auricular reconstruction.

Background: Full-thickness skin grafts (FTSGs) are a common repair option on the external ear, but there are few large case series examining graft sublocations, dimensions, and outcomes.

Objective: We sought to report our experience with FTSGs for repair of postsurgical defects of the external ear.

Methods: We conducted a retrospective review of all FTSGs on the ear performed by 2 surgeons (J.

The Bilateral Dufourmentel Flap for Repair of Nasal Dorsum Defects After Mohs Micrographic Surgery.

Background: Single-stage repairs of large nasal dorsum defects risk introducing lower nasal distortion.

Objective: To describe the authors experience with the "birhombic" flap, a bilateral Dufourmentel rhomboid flap, for repair of nasal surgical defects after Mohs micrographic surgery.

Materials And Methods: The authors performed a retrospective chart review of patients who underwent birhombic flap repair of the nose by a single physician after Mohs micrographic surgery from 2008 to 2013 at the Medical University of South Carolina.

New world cutaneous leishmaniasis.

A 24-year-old Bangladeshi man presented with a 12-week history of a pruritic papule on his left elbow that had enlarged and ulcerated. He was without any constitutional or systemic symptoms. He reported a history of extensive travel in the two years prior to presentation that included Bangladesh, South and Central America, and Mexico.

Brooke-Spiegler syndrome.

A 50-year-old woman presented with a long history of multiple, flesh-colored papules and nodules on her central face, neck, and upper shoulders, as well as pink papules on her scalp. They were neither pruritic nor tender, but the patient desired treatment for cosmesis. Histopathologic examination of a representative facial lesion was consistent with a trichoepithelioma and an upper forehead papule was consistent with cylindroma.

Familial multiple pilomatrixomas as a presentation of attenuated adenomatosis polyposis coli.

Pilomatrixomas are benign follicular tumors that occur most commonly in children. Rare multiple or familial pilomatrixomas have been associated with myotonic dystrophy and other disorders. Although sporadic pilomatrixomas and hybrid cutaneous cysts with pilomatrixoma-like features have been observed in some kindreds with Gardner syndrome, an autosomal dominant form of familial adenomatous polyposis, no definitive association has been made with multiple or familial pilomatrixomas.

Colonic ganglioneuromatous polyposis and metastatic adenocarcinoma in the setting of Cowden syndrome: a case report and literature review.

Cowden syndrome is a rare, autosomal-dominant, multisystem disorder characterized by hamartomatous tissue overgrowth and an increased risk of breast, thyroid, and endometrial cancers. Most of the cases arise from germline mutations of the phosphatase and tensin homologue tumor suppressor gene. An association with colon cancer remains unproven but has been suggested in previous reports.

A transient epidermolysis bullosa simplex-like phenotype associated with bexarotene treatment in a G138E KRT5 heterozygote.

Basal keratinocyte lysis is the hallmark histopathological finding of epidermolysis bullosa simplex (EBS), a group of rare heritable mechanobullous disorders characterized by intraepidermal blister formation and skin fragility. Over 100 mutations, found predominantly in the genes encoding keratins 5 and 14 (KRT5, KRT14), have been described to account for a variety of clinical subtypes. EBS with mottled pigmentation (EBS-MP) is a rare variant featuring childhood-onset reticulate hyperpigmentation and focal palmoplantar keratoderma, typically associated with a P25L KRT5 mutation.

Melanotic schwannoma arising in association with nevus of Ota: 2 cases suggesting a shared mechanism.

Melanotic schwannoma is a rare markedly pigmented peripheral nerve sheath tumor comprising cells with prominent melanization and schwannian features. The psammomatous variety is associated with Carney complex, a multiple neoplasia syndrome with spotty skin pigmentation. We present the first 2 reported cases of melanotic schwannoma arising in patients with a history of nevus of Ota, a rare dermal melanosis believed to represent a failure of melanocyte migration to the epidermis during embryogenesis.