lichenoid keratosis

li·chen·oid ker·a·to·sis

a solitary benign papule or plaque, with microscopic features resembling lichen planus, occurring on sun-exposed or unexposed skin.

li·chen·oid ker·a·to·sis

(lī'kĕ-noyd ker'ă-tō'sis)
A solitary benign papule or plaque, with microscopic features resembling lichen planus, occurring on sun-exposed or unexposed skin.


resembling lichen.

lichenoid infiltrate
adopts a banded configuration parallel to the epidermis.
lichenoid keratosis
circumscribed, firm, scaling plaque. See also ear plaque.
lichenoid-psoriasiform dermatosis
idiopathic, probably inherited skin disease of yearling Springer spaniels; lesions begin on the ear and groin and spread to all parts; lesions are symmetric, erythematous, hyperkeratotic, lichenoid papules and plaques.
References in periodicals archive ?
Differential Diagnoses of Seborrheic Keratosis (1,3) Permanent or Malignant Lesions Benign Lesions * Actinic keratosis * Acrochordon (skin tags) * Bowen disease (SCC in situ) * Acrokeratosis verruciformis * Invasive SCC / SCC in situ * Benign lichenoid keratosis * Lentigo maligna * Condyloma acuminatum * Malignant melanoma * Eocrine poroma/hidroacanthoma simplex * Pigmented basal cells * Melanooytic nevus * Verruca vulgaris (warts) * Solar lentigo (liver spots) * Tumor of the infundibulum SCC=squamous cell carcinoma.
Lichenoid keratosis is a very common diagnosis with lesions most often occurring on the trunk and proximal upper limbs of middle-aged or older patients.
3% cases, each of lichen planus hypertrophicus, lichen planus atrophicus, lichen planus actinicus, benign lichenoid keratosis, lichenoid eruption, and lichen striatus as 1.
6 The benign skin conditions asssociated with cutanous horns7,8 include soolar keratosis, angioma, angiokeratoma, cutaneous leishmaniasis, lichenoid keratosis, epidermal nevi, epidermal acanthomaa, seborrheic keratosis, sebaceous adenoma, trichilemmoma, sebaceous molluscum and verruca vulgaris.
Idiopathic benign lichenoid keratosis on the pinna of the ear in four dogs.
TABLE Some causes of cutaneous horn Benign--noninfectious Angiokeratoma Angioma Dermatofibroma Epidermal inclusion cyst ("sebaceous cyst") Linear verrucous epidermal nevus Fibroma Lichen simplex chronicus ("neurodermatitis") Lichenoid keratosis Prurigo nodularis Pyogenic granuloma Sebaceous adenoma Seborrheic keratosis Trichilemma Benign--infectious Condyloma acuminata (genital warts) Molluscum contagiosum Verruca vulgaris (common wart) Premalignant/malignant Actinic keratosis Basal cell carcinoma Bowen's disease Epidermoid carcinoma Kaposi's sarcoma Keratoacanthoma Malignant melanoma Squamous cell carcinoma Sources: Gould and Brodell 1999, (1) Akan et al 2001, (6) Khaitan 1999.
8 Actinic keratosis, warty dyskeratoma, solar lentigo, porokeratosis, prurigo nodularis, verruca, condyloma acuminatum, molluscum, seborrheic keratosis, lichenoid keratosis Melanoma 15 60.
Superficial BCC may mimic a lichenoid keratosis, Bowen's disease, or other inflammatory conditions such as psoriasis and dermatitis.
Some of the pseudolymphomas that can fool the clinician include lymphomatoid drug eruption, cutaneous leishmaniasis, lymphomatoid lichenoid keratosis, and reactive lymphoid hyperplasia at the site of vaccination.
Of those forty-seven patients, 27 (54%) had benign lichenoid keratosis, 17 (36%) had lupus erythematosus, and 3 (6%) had lichen planus.
Paramount among these are atypical squamoproliferative lesions with lichenoid inflammation, such as benign lichenoid keratosis, lichenoid actinic keratosis, and squamous cell carcinoma.
Age, y/Sex Site Diagnosis 4 17/F Cheek Folliculitis 10 55/F Leg Basal cell carcinoma 38 37/F Cheek Fibrous papule 45 38/F Back Solar lentigo 105 75/F Arm Scar 113 69/M Finger Actinic keratosis 125 40/F Unknown Basal cell carcinoma 160 69/M Canthus Ruptured cyst 189 44/F Chest Hemangioma 225 70/F Nose Seborrheic keratosis 296 64/M Forehead Basal cell carcinoma 307 46/M Forehead Basal cell carcinoma 345 72/M Breast Verrucous keratosis 346 77/F Breast Benign lichenoid keratosis 407 67/F Cheek Actinic keratosis 432 44/F Neck Syringoma 447 37/F Shoulder Benign lichenoid keratosis 472 56/F Nose Fibrous papule 479 42/F Shoulder Nevus Case No.