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Cureus
December 2024
Saudi Internal Medicine Residency Training Program, Ministry of Health, Jeddah, SAU.
Eccrine acrospiromas, also known as hidradenomas, are rare benign tumors that develop from the eccrine sweat glands. Hidradenoma is a multilobular, nonencapsulated, well-circumscribed dermal nodule that may involve the epidermis and extend into the subcutaneous fat. The etiology and prevalence of nodular hidradenoma are not well defined, but it is noted that it can occur spontaneously or traumatically.
View Article and Find Full Text PDFGeorgian Med News
November 2024
4Department of Pathology, University of Virginia, Charlottesville, USA.
The toxicokinetics of nitrosamines remain a mystery to this day, though it appears that the role of nitrosamines in potentiating the generation of mutations required for the onset of skin cancer continues to be a significant concern. Nitrosamines are mutagens, genotoxic substances, and mediators of phototoxicity/carcinogenicity, whose long-term daily usage, in the context of polypharmacy, can result in the parallel appearance of heterogeneous forms of skin cancer: keratinocytic and melanocytic. But a number of clinical observations suggest that it is the nitrosamines that potentiate the multiple occurrences of skin cancer over the years, or recurrences of skin cancer localized in areas exposed to solar radiation.
View Article and Find Full Text PDFGynecol Oncol Rep
February 2025
People's Hospital of China Medical University, Department of Gynecology, People's Hospital of Liaoning Province, Shenyang, China.
Background: Keratoacanthoma is a relatively rare skin tumor, with vulvar keratoacanthoma being even more uncommon. Although the majority of keratoacanthomas exhibit a benign course, a subset of cases may show features of malignant potential, such as marginal invasion and recurrence.
Case: An 82-year-old female presented with a rapidly growing exophytic lesion on the left vulva, measuring 1.
Arch Dermatol Res
January 2025
Department of Dermatology, College of Medicine, The Ohio State University Wexner Medical Center, 540 Officenter Place, Columbus, OH, 43230, USA.
The use of immunotherapy is an emerging treatment option for advanced malignancies. Cutaneous adverse events following cancer immunotherapy are well-documented in the literature. The rarer cutaneous adverse effects are less characterized, including eruptive keratoacanthomas (KA).
View Article and Find Full Text PDFAm J Dermatopathol
December 2024
Department of Dermatology, Warren Alpert Medical School of Brown University, Providence, RI.
Pyoderma gangrenosum (PG) is a rare inflammatory neutrophilic dermatosis that is difficult to diagnose due to non-specific clinical, laboratory, and histopathologic features. Distinguishing pseudoepitheliomatous hyperplasia (PEH) from squamous cell carcinoma (SCC) is also histopathologically challenging. The connection between PEH and PG is not well recognized, and instances of PG mimicking SCC are rare.
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