Table 1. Case Type and Frequency of Diagnoses in 499 Cases.
| Diagnosis | Cases, No. |
|---|---|
| Benign melanocytic nevi (blue, dermal, compound, junctional) | 90 |
| Basosquamous acanthomas/verrucoid keratoses (stages of seborrheic keratosis and/or verrucae) | 100 |
| Basal cell carcinoma | 80 |
| Atypical nevi | 44 |
| Actinic keratosis | 32 |
| Squamous cell carcinoma in situ | 31 |
| Invasive squamous cell carcinoma | 28 |
| Spongiotic dermatitis | 23 |
| Epidermal cyst | 16 |
| Malignant melanoma | 15 |
| Dermatofibroma | 6 |
| Hemangioma | 5 |
| Sebaceous hyperplasia | 4 |
| Prurigo nodularis | 4 |
| Neurofibroma | 4 |
| Fibrous papule | 4 |
| Pilar cyst | 3 |
| Lipoma | 2 |
| Psoriasis | 1 |
| Bullous pemphigoid | 1 |
| Granuloma annulare | 1 |
| Lichen planus | 1 |
| Onychomycosis | 1 |
| Insect bite | 1 |
| Small vessel necrotizing vasculitis (leukocytoclastic vasc) | 1 |
| Chondrodermatitis nodularis helicis | 1 |