Granuloma annulare in a zoster scar of a patient with multiple myeloma.

Granuloma annulare (GA) is a common benign inflammatory skin disorder with an unknown pathogenesis. Granuloma annulare occurring in prior sites of herpes zoster (HZ) infection is rarely reported; however, it is the most common granulomatous reaction described at these sites. We report a case of localized GA on scars of prior HZ infection in a patient with multiple myeloma who had received an autologous peripheral stem cell transplant (PSCT).

Erythema multiforme during anti-tumor necrosis factor treatment for plaque psoriasis.

Tumor necrosis factor alpha (TNF-alpha) inhibitors constitute a class of biologic treatments utilized in the management of psoriasis. We report a case of a patient treated for chronic plaque psoriasis with the anti-TNF-alpha monoclonal antibody adalimumab, who developed erythema multiforme (EM). The patient had previously developed EM on two occasions while taking the TNF-alpha inhibitor etanercept.

Gnatophyma and otophyma.

Background: Phymas are slowly progressive, disfiguring disorders of the face and ears that represent the end stage of rosacea. The most common phyma is rhinophyma, yet similar swellings may occur on the chin (gnatophyma), forehead (metophyma), one or both ears (otophyma), and eyelids (blepharophyma).

Objective: Unlike rhinophyma, otophyma is rarely seen.

Facial porokeratosis.

A 34-year-old man from El Salvador was referred to our clinic with a 10-year history of a pruritic erythematous facial eruption. He reported increased pruritus and scaling of lesions when exposed to the sun. He worked as a construction worker and admitted to frequent sun exposure.

Acquired perforating dermatosis associated with primary biliary cirrhosis and hashimoto thyroiditis.

Acquired perforating dermatosis (APD) is an uncommon skin eruption of unclear etiology that most often is associated with diabetes mellitus or chronic renal insufficiency. There are rare reports of APD in association with liver disease or thyroid disease. We report a case of APD in a patient with both primary biliary cirrhosis and Hashimoto thyroiditis in the absence of diabetes mellitus and chronic renal insufficiency.

Regression of cutaneous intravascular lymphoma with rituximab.

Intravascular lymphoma, also known as malignant angioendotheliomatosis or angiotropic lymphoma, is a rare non-Hodgkin lymphoma that is usually fatal. It often presents with cutaneous and/or nervous system involvement, but the disease can involve any organ system. Clinical symptoms result from the occlusion of small vessels by tumor cells and fibrin.

Mycobacterium haemophilum infections in heart transplant recipients: case report and review of the literature.

Non-tuberculous mycobacteria are becoming increasingly important pathogens among transplant recipients. We report a case of disseminated Mycobacterium haemophilum infection in a heart transplant recipient, manifesting as cellulitis, subcutaneous nodules, septic arthritis, and pneumonitis. Our case illustrates diverse challenges in the identification and treatment of this pathogen, such as its unique culture requirements and variable antimicrobial susceptibilities.