Diagnostic and Management Considerations for Skin Lesions

Inflammatory and Infectious Lesions

• Lichen Sclerosus is characterized by thinned epidermis with hyperkeratosis, a wide band of homogenized collagen below the dermoepidermal junction and a lymphocytic infiltrate, as reported by the British Journal of Dermatology 1

Differential Diagnoses by Lesion Type

For Pigmented Lesions

• Melanoma can be phenotypically diverse and may be mimicked by benign nevi, seborrheic keratoses, pigmented basal cells, hematomas, and vascular growths, according to Biochimica et Biophysica Acta - Reviews on Cancer 2, 3
• Seborrheic keratoses are benign but may sometimes be confused with melanoma, as noted by Biochimica et Biophysica Acta - Reviews on Cancer 2
• Pigmented Basal Cell Carcinoma and Melanoma can both present as pigmented lesions requiring careful examination, as reported by Biochimica et Biophysica Acta - Reviews on Cancer 2

For Nodular Lesions

• Cutaneous Abscesses are collections of pus within the dermis and deeper skin tissues, while epidermoid cysts contain cheesy keratinous material, as described by Clinical Infectious Diseases 4

For Ulcerative Lesions

• Furuncles are infections of the hair follicle, usually caused by S. aureus, while carbuncles involve several adjacent follicles, according to Clinical Infectious Diseases 4

Diagnostic Approach

• For melanocytic lesions thought to be malignant, complete excision with a narrow rim (2 mm) of normal skin is the standard practice rather than partial biopsy, as recommended by the British Journal of Cancer 5