Scalp paraffinoma underlying squamous cell carcinoma

Area of Science:

• Dermatology
• Oncology
• Pathology

Background:

• Paraffinoma, a benign granulomatous reaction to injected paraffin, is uncommon.
• Squamous cell carcinoma (SCC) has been associated with paraffinomas in other body sites, such as the breast and penis.
• The occurrence of SCC arising from scalp paraffinoma is undocumented.

Purpose of the Study:

• To report a unique case of multiple squamous cell carcinomas developing in the context of a scalp paraffinoma.
• To highlight the potential association between paraffinoma and secondary malignancy.
• To contribute to the literature on rare cutaneous neoplasms.

Main Methods:

• Case report of an 84-year-old male patient.
• Histopathological examination of scalp lesions.
• Review of existing literature on paraffinoma and cutaneous malignancies.

Main Results:

• Multiple, poorly differentiated, acantholytic squamous cell carcinomas were identified on the patient's bald scalp.
• The carcinomas were histologically associated with underlying pseudocystic spaces characteristic of paraffinoma.
• No prior reports of SCC arising from scalp paraffinoma were found.

Conclusions:

• Scalp paraffinoma may serve as a substrate for the development of squamous cell carcinoma.
• This case represents a novel association in dermatopathology.
• Further investigation may be warranted to understand the oncogenic potential of scalp paraffinomas.