Search Results for: mastocytosis

Histologic Diagnosis of Inflammatory Skin Diseases

Urticaria pigmentosa

Urticaria pigmentosa Synonyms Mastocytosis Presentation stereotypical Age and sex All ages and both sexes, but mostly nodules and blisters in infants and children, and mostly macules and papules in adults Distribution of lesions Localized or widespr…

Histologic Diagnosis of Inflammatory Skin Diseases

Errors and Reasons

…of leukocytoclastic vasculitis. Error: Urticaria pigmentosa, mastocytosis, and telangiectasia macularis eruptiva perstans are different names for different diseases. Reason: Urticaria pigmentosa and mastocytosis are synonyms, referring as they do to…

Histologic Diagnosis of Inflammatory Skin Diseases

Identification of Basic Patterns: Skin: Perivascular Dermatitis

…ig. 5.128 A&B), a benign neoplastic process known also as mastocytosis. Figure 5.125 A&B. A mixed-cell infiltrate of a neoplastic disease: lymphomatoid papulosis. A perivascular mixed-cell infiltrate composed predominantly of atypical lymphoc…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Wide and Deep Excision for Melanoma?

…romatosis, 6 for mast cells per high power field as a sign of mastocytosis, and 6 mm diameter as a criterion for the diagnosis of melanoma in the ABCDs. A surgeon should excise as much normal skin as is thought necessary to remove the melanoma entire…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…ale-crust. At higher magnification, however, the diagnosis of mastocytosis becomes evident; mast cells are predominant. The presence of eosinophils is attributable to trauma to the mast cells, they releasing eosinophilic chemotactic factor that pulls…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Urticarial Vasculitis?

…systemic symptoms.” Grattan CEH, Kobza A. Urticaria and mastocytosis. In: Burns T, Breathnach S, Cox N, et al., eds. Rook’s Textbook of Dermatology, 7th ed. Oxford: Blackwell Science, 2004:47.23. Cutaneous vasculitis, by definition, is sm…