Primary cutaneous B cell lymphomas (PCBCL) are thesecond most common type of primary cutaneouslymphoma. The three main types of PCBCL areprimary cutaneous marginal-zone lymphoma(PCMZL), primary cutaneous follicle-centerlymphoma, and primary cutaneous diffuse largeB-cell lymphoma, leg type. PCMZL has an indolentcourse with a five-year survival rate approaching99%. Lesions most often present on the trunk or armas erythematous-to-violaceous papules, plaques, ornodules. Approximately one-half of patients havesolitary skin lesions. Treatment options includesurgery, radiation, and topical, intralesional orsystemic therapy. We present the case of a 33-yearoldHispanic woman with firm, pruritic, pink papuleson the forehead and cheeks, who was diagnosedwith PCMZL.

Angiolymphoid hyperplasia with eosinophilia is a rare, benign, vascular proliferation that presents as dome-shaped, light-pink-to-red-brown papules or subcutaneous masses that lack distinguishing surface changes. The condition typically presents as a single lesion or multiple lesions that involve contiguous areas. The pathogenesis is poorly understood. Angiolymhpoid hyperplasia with eosinophilia has been associated with antecedent trauma, T-cell proliferation, infection, and hormone imbalance. This report details a case of widespread angiolymphoid hyperplasia with eosinophilia that flared while the patient was pregnant.

Pleomorphic dermal sarcoma (PDS) was recognized in the 2013 World Health Organization Classification of Tumors of Soft Tissue and Bone as a clinical entity with adverse histopathologic features compared to the more superficial and less aggressive atypical fibroxanthoma (AFX). Although the gold standard treatment of AFX is Mohs micrographic surgery (MMS), the optimal treatment for PDS has yet to be determined. We report the case of a 71-year-old man with a PDS with perineural invasion on the scalp, with no recurrence one-year post-treatment with MMS and adjuvant radiation therapy. In contrast to wide local excision, MMS offers complete margin control and tissue preservation, which helps minimize scarring and morbidity. The comparative efficacy of MMS versus wide local excision in the treatment of PDS with and without radiation remains unknown and warrants further investigation.

Anaplastic large-cell lymphomas (ALCLs) are agroup of CD30-positive non-Hodgkin lymphomasthat are linked by common morphologic andimmunophenotypic features but have varyingclinical and genetic characteristics. The World HealthOrganization classification currently recognizes threesubtypes of ALCL: systemic anaplastic lymphomakinase-positive ALCL, systemic anaplastic lymphomakinase-negative (ALK-) ALCL, and primary cutaneousALCL. Here we present a 42-year-old man with ahistory of systemic ALK- ALCL, who was in remissionfor six months before relapsing with skin-limitedanaplastic large-cell lymphoma.

We report the first case of direct immunoflourescence-proven immunoglobulin A (IgA) vasculitis associated with influenza infection in an adult patient. IgA vasculitis, which was previously known as Henoch-Schönlein purpura, is the most common systemic vasculitis in children but rarely occurs in adults. Disease onset often occurs after upper respiratory tract infections that are caused by adenovirus or enterovirus. The American College of Rheumatology defines IgA vasculitis by the presence of any two of the following four criteria: age ≤ 20 years at disease onset, palpable purpura, acute abdominal pain, and a biopsy specimen that shows granulocytes in the walls of small arterioles or venules. Purpura, abdominal pain, and arthralgia comprise the classic triad. Renal involvement may be severe, especially in adults. Treatment is most often supportive but glucocorticoids and/or immunosuppressive agents are recommended in severe or refractory cases.