Search Results for: leishmaniasis

From the Dermatologikum Hamburg: Quiz

From the Dermatologikum Hamburg: Quiz

…ents from a Western Mediterranean area. Br J Dermatol. 2009;161(2):320-5. CrossRef 6. BÖer A, Falk T. New Heights: Cutaneous leishmaniasis-patterns and clues Dermatopathology: Practical & Conceptual. 2007;13(1):7. 7. Fraga J, Veland N, Montalvo…

An itching plaque

An itching plaque

…es worldwide, probably widely underreported, with estimated global annual incidence of 0.2 to 0.4 million cases for visceral leishmaniasis (VL), and 0.7 to 1.2 million cutaneous leishmaniasis (CL) [1]. While 90% of VL concentrate in six countries…

Histologic Diagnosis of Inflammatory Skin Diseases

Cells That Mediate Inflammation (Inflammatory Cells)

…have strong cell-mediated immunity and are successful in destroying the parasites, the result being expressed clinically as leishmaniasis recidivans. In contrast, the immune response in patients in whom a Th2 response prevails are unable to destroy…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…lichenoid + 10.56.2B: Lymphocytes, plasma cells, and histiocytes that contain tiny round monomorphous basophilic organisms = Leishmaniasis, acute The distinctive character of the organisms in the cytoplasm of histiocytes establishes the diagnosis as…

Histologic Diagnosis of Inflammatory Skin Diseases

Leprosy

…kingly foamy, rather than granular, or subtly foamy, cytoplasm of histiocytes devoid of blue-gray cast. Disseminated anergic leishmaniasis differs from lepromatous leprosy because distinct organisms are identified readily in the cytoplasm of…

Histologic Diagnosis of Inflammatory Skin Diseases

Applicable Terms

…tered in infectious diseases besides tuberculosis, among those being tuberculoid leprosy and the recidivans manifestation of leishmaniasis, and in noninfectious diseases such as rosacea and its variant, perioral/periocular dermatitis. Curiously, the…

Differential Diagnosis in Dermatopathology

Discussions

…infiltrates of inflammatory cells in lupus vulgaris do not involve small nerves in the dermis. The recidivans expression of leishmaniasis resembles more closely lupus vulgaris than it does tuberculoid leprosy. Episodically, lesions of sarcoidosis…

Differential Diagnosis in Dermatopathology

Tuberculoid leprosy vs. Sarcoidosis

Macaulay first coined the diagnostic term “lymphomatoid papulosis” (LyP) in 1968, although the disease process was first published more than a decade earlier by Dupont and colleagues under the moniker “histiomonocytic reticulosis.” LyP is a rare…

Histologic Diagnosis of Inflammatory Skin Diseases

Syphilis

…stic diseases such as mycosis fungoides and B-cell lymphomas, and a gumma by lupus vulgaris and the recidivans expression of leishmaniasis. Miscues clinical as clues to diagnosis histopathologic Denominators in common: Papules in annular…