Granular cell tumor

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Granular cell tumor, which was referred to historically as a granular cell myoblastoma, is a tumor that can develop on any skin or mucosal surface, but occurs on the tongue 40% of the time. Currently, it is believed that the affected cells are of neural origin. The usual presentation is of a slow growing, nontender nodule. Microscopically, the granular cell tumor can be mistaken for squamous cell carcinoma. Next most common location in the head and neck for Granular cell tumors is in the larynx (10%)

References

Kahn, Michael A. Basic Oral and Maxillofacial Pathology. Volume 1. 2001.

Diseases of the skin and appendages by morphology

Growths

Epidermal	verruca, clavus, seborrheic keratosis, acrochordon, molluscum contagiosum, actinic keratosis, squamous cell carcinoma, basal cell carcinoma, merkel cell carcinoma, nevus sebaceous, trichoepithelioma

Pigmented	ephelis, lentigo, melasma, nevus, malignant melanoma

Dermal and subcutaneous	epidermal inclusion cyst, hemangioma, dermatofibroma, keloid, lipoma, neurofibroma, xanthoma, Kaposi's sarcoma, infantile digital fibromatosis, granular cell tumor, leiomyoma, lymphangioma circumscriptum, myxoid cyst

Rashes

With epidermal involvement

Eczematous	essential dermatitis, contact dermatitis, atopic dermatitis, seborrheic dermatitis, stasis dermatitis, lichen simplex chronicus, Darier's disease, glucagonoma syndrome, langerhans cell histiocytosis, lichen sclerosus, pemphigus foliaceus, Wiskott-Aldrich syndrome, Zinc deficiency

Scaling	psoriasis, tinea corporis, tinea cruris, tinea pedis, tinea manuum, tinea faciale, pityriasis rosea, secondary syphillis, mycosis fungoides, systemic lupus erythematosus, pityriasis rubra pilaris, parapsoriasis, icthyosis

Blistering	herpes simplex, herpes zoster, varicella, bullous impetigo, acute contact dermatitis, pemphigus vulgaris, bullous pemphigoid, dermatitis herpetiformis, porphyria cutanea tarda, epidermolysis bullosa simplex

Papular	scabies, insect bite reactions, lichen planus, miliaria, keratosis pilaris, lichen spinulosus, transient acantholytic dermatosis, lichen nitidus, pityriasis lichenoides et varioliformis acuta

Pustular	acne vulgaris, acne rosacea, folliculitis, impetigo, candidiasis, gonococcemia, dermatophyte, coccidioidomycosis, subcorneal pustular dermatosis

Hypopigmented	tinea versicolor, vitiligo, pityriasis alba, postinflammatory hypopigmentation, tuberous sclerosis, idiopathic guttate hypomelanosis, leprosy, hypopigmented mycosis fungoides

Without epidermal involvement

Red

Blanchable Erythema

Generalized	drug eruptions, viral exanthems, toxic erythema, systemic lupus erythematosus

Localized	cellulitis, abscess, furuncle, erythema nodosum, carcinoid syndrome, carcinoma erysipeloides, fixed drug eruption

Specialized	urticaria, erythema multiforme, erythema migrans, erythema gyratum repens, erythema annulare centrifugum, erythema ab igne

Nonblanchable Purpura

Macular	thrombocytopenic purpura, actinic purpura

Papular	disseminated intravascular coagulation, vasculitis

Indurated

scleroderma/morphea, granuloma annulare, lichen sclerosis et atrophicus, necrobiosis lipoidica

Miscellaneous

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This page was last modified on 4 November 2008, at 19:38.

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