Case Of Granulomatous Dermatitis Research Articles

A case of granulomatous dermatitis following dermaroller therapy for acne scars treated with methotrexate: A difficult-to-treat condition

A case of granulomatous dermatitis following dermaroller therapy for acne scars treated with methotrexate: A difficult-to-treat condition

Granulomatous & histiocytic dermatitides.

Granulomas of the skin may be classified in several ways. They are either infectious or non-infectious in character, and they contain areas of necrobiosis or necrosis, or not. Responsible infectious agents may be mycobacterial, fungal, treponemal, or parasitic organisms, and each case of granulomatous dermatitis should be assessed histochemically for those microbes. In the non-infectious group, examples of necrobiotic or necrotizing granulomas include granuloma annulare; necrobiosis lipoidica; rheumatoid nodule; and lupus miliaris disseminates faciei. Non-necrobiotic/necrotizing and non-infectious lesions are exemplified by sarcoidosis; foreign-body reactions; Melkersson-Rosenthal syndrome; Blau syndrome; elastolytic granuloma; lichenoid and granulomatous dermatitis; interstitial granulomatous dermatitis; cutaneous involvement by Crohn disease; granulomatous rosacea; and granulomatous pigmented purpura. Histiocytic dermatitides that do not feature granuloma formation are peculiar reactions to infection, such as cutaneous malakoplakia; leishmaniasis; histoplasmosis; lepromatous leprosy; rhinoscleroma; lymphogranuloma venereum; and granuloma inguinale.

Immunohistochemical Expression of Ionized Calcium Binding Adapter Molecule 1 in Cutaneous Histiocytic Proliferative, Neoplastic and Inflammatory Disorders of Dogs and Cats

Ionized calcium-binding adapter molecule 1 (Iba1) has been used widely as a marker for microglial cells and, recently, was also recognized as a 'pan-macrophage marker', as it is expressed by all subpopulations of cells of the monocyte/macrophage lineage. To determine the specificity of Iba1 as an immunohistochemical marker for canine and feline histiocytic proliferative, neoplastic and inflammatory disorders of the skin, we evaluated its expression in two types of histiocytic tumours, two non-neoplastic histiocytic proliferative conditions, one case of granulomatous dermatitis and four non-histiocytic tumours. Cells of the monocyte/macrophage lineage in all cases of canine cutaneous histiocytoma (9/9), reactive histiocytosis (9/9), histiocytic sarcomas (5/5), feline progressive dendritic cell histiocytosis (3/3) and macrophages in cutaneous mycobacteriosis (7/7) showed strong cytoplasmic expression of Iba1. Neoplastic cells of melanomas (10/10), lymphomas (7/7), mast cell tumours (7/7) and plasmacytomas (4/4) did not express Iba1. Iba1 is therefore a useful marker of cells of the monocyte/macrophage lineage in canine and feline inflammatory, proliferative and neoplastic conditions and can be used to identify these cells in formalin-fixed, paraffin wax-embedded tissues. Iba1 is not able to differentiate between macrophages and dendritic antigen presenting cellsand expression does not allow classification of these histiocytic disorders.

Adverse Effects of Cosmetic Tattooing: An Illustrative Case of Granulomatous Dermatitis Following the Application of Permanent Makeup

Adverse Effects of Cosmetic Tattooing: An Illustrative Case of Granulomatous Dermatitis Following the Application of Permanent Makeup

Adverse Effects of Cosmetic Tattooing: An Illustrative Case of Granulomatous Dermatitis Following the Application of Permanent Makeup

Adverse Effects of Cosmetic Tattooing: An Illustrative Case of Granulomatous Dermatitis Following the Application of Permanent Makeup

Dermatitis granulomatosa sobre lesiones cicatrizales de herpes zóster

Abstract—The development of granulomatous lesions at sites of resolved herpes zoster scars is a rare phenomenon clinically characterized by red-brownish or skin-colored infiltrated papules and nodules that appear several weeks or months after the previous viral infection.In this report, a new case of granulomatous dermatitis at the site of resolved cutaneous herpes zoster lesions in a patient with chronic lymphocytic leukemia is presented. The patient shows a unique clinical picture consisting of large red-brownish plaques and edematous areas, in the absence of infiltrated papules and nodules. Histologically, the lesions are characterized by the presence of tuberculoid granulomas with areas of granulomatous folliculitis.

Cutaneous and lymphadenopathic sarcoidosis: Report of a case

Granulomas of the skin may be classified in several ways. They are either infectious or non-infectious in character, and they contain areas of necrobiosis or necrosis, or not. Responsible infectious agents may be mycobacterial, fungal, treponemal, or parasitic organisms, and each case of granulomatous dermatitis should be assessed histochemically for those microbes. In the non-infectious group, examples of necrobiotic or necrotizing granulomas include granuloma annulare; necrobiosis lipoidica; rheumatoid nodule; and lupus miliaris disseminates faciei. Non-necrobiotic/necrotizing and non-infectious lesions are exemplified by sarcoidosis; foreign-body reactions; Melkersson-Rosenthal syndrome; Blau syndrome; elastolytic granuloma; lichenoid and granulomatous dermatitis; interstitial granulomatous dermatitis; cutaneous involvement by Crohn disease; granulomatous rosacea; and granulomatous pigmented purpura. Histiocytic dermatitides that do not feature granuloma formation are peculiar reactions to infection, such as cutaneous malakoplakia; leishmaniasis; histoplasmosis; lepromatous leprosy; rhinoscleroma; lymphogranuloma venereum; and granuloma inguinale.

Wells' syndrome. Recurrent granulomatous dermatitis with eosinophilia

Two cases of granulomatous dermatitis with eosinophilla (Wells' syndrome) are reported. With Wells' original four cases, these two cases define a distinctive dermatosis with onset as cellulitis and formation of solid edema and either final spontaneous resolution or resolution with steroid therapy. Microscopic study showed diffuse tissue eosinophilia and fibrinoid flame figures, evolution of associated focal necrobiosis, and formation of focal microgranulomas associated with eosinophils. Biopsy of muscle and fascia showed comparable fasciitis and eosinophilic myositis. Immunofluorescence in one case disclosed fibrin in the dermis and lgM, lgA, and C3 in the blood vessels of the muscle. Recurrences of the lesions often appeared to be related to drug administration or surgery.