Pathology
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Atlas of dermatopathology
Josef Feit, Hana Jedličková, Günter Burg, Luděk Matyska, Spasoje Radovanovic et al.
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+ Introduction
+ Literature
+ Support
+ Skin biopsy
+ Non-tumorous skin diseases
+ Skin tumors
+ Cysts of the skin and subcutis
+ Soft tissue lesions
+ Some lesions of the oral cavity
+ Dermatovenerology
+ Collection of histological slides by prof. Günter Burg
+ Collection of histological slides by prof. Werner Kempf
+ Collection of histological slides of dr. Ram Chandra Adhikari
Lymphoblastic lymphoma B
Clinical signs
  • usually secondary skin involvement in patients suffering from acute lymphoblastic leukemia; primary cases belong to the LBCL, non leg type category
  • rare disease
  • age: adolescents, young adults
  • solitary or multiple livid nodules
Histology

Diffuse dense infiltrate consisting of medium-sized to large cells in dermis and subcutis. Lymphoblasts with round or convoluted nuclei and thin inconspicuous cytoplasm. Mitotic activity. Presence of macrophages can result in “starry sky” picture.

Immunophenotype and genetic features:

  • B cell markers (CD19, CD79a, cytoplasmic IgM heavy chain are positive
  • CD10 (CALLA antigen), TdT and CD34 are positive

Lymphoblastic lymphoma B (2482)