Table 3. Skin biopsy cases that were clinically mistaken for seborrheic keratosis.

Diagnosis	Frequency (n=91)
Verruca vulgaris/warts	25 (27.5)
Actinic keratosis	13 (14.3)
Compound nevi	6 (6.6)
Intradermal nevi	5 (5.5)
Lichenoid dermatitis	5 (5.5)
Basal cell carcinoma	4 (4.4)
Bowen disease	3 (3.3)
Squamous cell carcinoma	2 (2.2)
Miscellaneous*	28 (30.8)

Values are presented as frequency (%). The sum of the percentages does not equal 100% because of rounding. ^*Miscellaneous includes other cases (urticaria, eccrine hidradenoma, fungal infestation, prurigo nodularis, psoriasiform dermatitis).