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

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…

Histologic Diagnosis of Inflammatory Skin Diseases

Histiocytosis X

…of the scalp is less papular and lacks a purpuric component. Mastocytosis, when papular, consists of widespread yellow-brown lesions devoid of purpura; papules urticate when rubbed. Miscues clinical as clues to diagnosis histopathologic Histiocytosi…

Histologic Diagnosis of Inflammatory Skin Diseases

Applicable Terms

…a sign of specific diseases such as acrosclerosis, a form of mastocytosis (telangiectasia macularis eruptiva perstans), or Osler-Weber-Rendu syndrome (hereditary hemorrhagic telangiectasia). Telangiectasia is an essential component of poikiloderma,…