Seborrheic keratoses (SKs) are common epidermal tumors composed of benign keratinocytes. Malignant skin tumors including basal cell carcinoma (BCC) rarely arise within SKs. We report a rare case of an 82-year-old man with nodulocystic BCC that appeared at the center of a scaly hyperpigmented SK that had been presented for more than 10 years. It was histologically confirmed that CK19-positive BCC arose directly from the wall of the pseudohorn cyst, a part of the SK. Nodular and/or cystic BCC also rarely arise within SKs while the most common histologic type of BCC within SKs is the superficial type. Careful observation of SKs is important even though it is rarely a background condition for malignant transformation.
Sehr geehrte Herausgeber, lokal fortgeschrittene kutane Plattenepithelkarzinome (squamous cell carcinoma, SCC) sind mitunter durch eine Operation allein schwer zu behandeln. Im Fall von SCC im Kopf-Hals-Bereich gibt es mehrere Berichte über die Anwendung von Chemotherapie, die nahe legen, dass eine intraarterielle Chemotherapie (CRT/IA) der intravenösen vorzuziehen ist [ 1, 2 ] . Bisher gibt es jedoch nur einen Bericht über CRT/IA bei kutanem SCC [ 3 ] . In dieser Arbeit berichten wir über den Fall eines mit Hyperkalzämie und Leukozytose einhergehenden, Interessenkonflikt Keiner.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.