Indurated purple plaques on the scalp.

Cutaneous epithelioid angiosarcoma is a rare neoplasm of vascular endothelial cell origin that can mimic a cutaneous lymphoma, metastatic carcinoma, or Kaposi sarcoma. It is one of the most malignant cutaneous tumors and early diagnosis is essential, as the tumor metastasizes quickly. We describe a 75-year-old man who presented with three tender, indurated violaceous plaques on his scalp.

Aleukemic cutaneous myeloid sarcoma.

Background: Aleukemic cutaneous myeloid sarcoma (CMS) represents an important yet rare entity denoting the presence of a cutaneous myeloid leukemic infiltrate without concurrent peripheral blood or bone marrow disease. The clinicopathologic diagnosis remains elusive due to isolated skin findings and variable immunostaining. Cytogenetic and molecular findings have infrequently been reported.

Analysis of botulinum toxin products and litigation in the United States.

Background: Botulinum neurotoxin (BoNT) has diverse cosmetic and therapeutic applications, spanning multiple medical specialties. Recent lawsuits alleging complications from its clinical use have raised significant questions about medicolegal risk.

Objective: To identify and assess legal cases related to clinical complications of BoNT products.

Developing melanoma therapeutics: overview and update.

Melanoma is a common, often deadly malignancy, historically associated with limited treatment options for advanced disease. In recent years, systems-based research has resulted in significant clinical advancements. Strategic inhibition of mutated oncoproteins and targeting of immune checkpoints have emerged as very promising approaches.

Molecular targeting of acid ceramidase: implications to cancer therapy.

Increasingly recognized as bioactive molecules, sphingolipids have been studied in a variety of disease models. The impact of sphingolipids on cancer research facilitated the entry of sphingolipid analogues and enzyme modulators into clinical trials. Owing to its ability to regulate two bioactive sphingolipids, ceramide and sphingosine-1-phosphate, acid ceramidase (AC) emerges as an attractive target for drug development within the sphingolipid metabolic pathway.