title: Primary cutaneous B cell lymphoma--leg type (NEW EORTC--WHO classification), with nasal sinuses involvement.
abstract: Primary Cutaneous lymphomas of B cell origin are rare, there remains a controversy in truly classifying these lymphomas and an updated EORTC classification divides them on the basis of their distinct histopthological grounds rather than on the basis of their anatomic location as in WHO classification, while the new WHO- EORTC joint classification maintains some characteristics of both systems, We report an elderly gentleman who primarily had a typical Leg dominant Cutaneous lymphoma of B cell origin uniquely with involvement of nasal Sinusues, bearing the Immunohistochemical staining features of "Cutaneous lymphoma - Leg Type" befitting the new joint WHO-EORTC classification of Cutaneous B cell Lymphoma.
authors.affiliation: Department of Hematology/Oncology, The Aga Khan University Hospital, Karachi, Pakistan.
authors.forename: Asim Jamal
authors.initials: AJ
authors.lastname: Shaikh
authors.forename: Nehal
authors.initials: N
authors.lastname: Masood
authors.forename: Aamir
authors.initials: A
authors.lastname: Ahsan
authors.forename: Wasim
authors.initials: W
authors.lastname: Memon
mesh_terms: D000368:Aged; D001706:Biopsy; D005145:Face; D006801:Humans; D007866:Leg; D016393:Lymphoma, B-Cell / Q000145:classification* / Q000000981:diagnostic imaging / Q000473:pathology; D008297:Male; D009361:Neoplasm Invasiveness; D010255:Paranasal Sinus Neoplasms / Q000145:classification* / Q000000981:diagnostic imaging / Q000473:pathology; D011859:Radiography; D012720:Severity of Illness Index; D012878:Skin Neoplasms / Q000145:classification* / Q000000981:diagnostic imaging / Q000473:pathology; D014944:World Health Organization