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Sometimes, seborrheic keratosis and basal cell carcinoma occur at the same location. [ 7 ] [ 8 ] At clinical examination, a differential diagnosis considers warts and melanomas . [ 4 ] Because only the top layers of the epidermis are involved, seborrheic keratoses are often described as having a "pasted on" appearance.
Many seborrheic keratoses on the back of a person with Leser–Trélat sign due to colon cancer. The Leser–Trélat sign is the explosive onset of multiple seborrheic keratoses [1] (many pigmented skin lesions), [2] [3] often with an inflammatory base. This can be a sign of internal malignancy as part of a paraneoplastic syndrome. In addition ...
Stucco keratosis (digitate seborrheic keratosis, hyperkeratotic seborrheic keratosis, keratosis alba, serrated seborrheic keratosis, verrucous seborrheic keratosis) Superficial basal cell carcinoma (superficial multicentric basal cell carcinoma) Syringadenoma papilliferum (syringocystadenoma papilliferum)
However, noncontagious warts can become permanent in older adults due to seborrheic keratosis — skin cells that have rapidly multiplied and turned into differently colored and textured lumps.
Seborrheic dermatitis. ... “The bumps have a pearly appearance, and usually have a central indentation.” ... Actinic keratosis typically develops on sun-exposed areas like the face and the arms.
Pigmented actinic keratosis; Pigmented hairy epidermal nevus syndrome; Pigmented seborrheic keratosis; Pilar cyst; Pilar sheath acanthoma; Pilar tumor; Pilonidal sinus; Pitch keratosis; Plasma cell balanitis; Plasma cell vulvitis; Porcupine man; Porocarcinoma; Poroma; Primary cutaneous adenoid cystic carcinoma; Primary neuroendocrine carcinoma ...
Seborrhoeic dermatitis (also spelt seborrheic dermatitis in American English) is a long-term skin disorder. [4] Symptoms include flaky, scaly, greasy, and occasionally itchy and inflamed skin. [2] [3] Areas of the skin rich in oil-producing glands are often affected including the scalp, face, and chest. [4]
Patients present with flat, slightly scaly, red-brown macules on the face, neck, and body, recurring especially around the penial area, or verruca-like papillomatous lesions, seborrheic keratosis-like lesions, and pinkish-red plane papules on the hands, upper and lower extremities, and face.