Oral Oncology Reports (Mar 2024)

Mandible infiltration as a clinical signal of extramedullary B-cell acute lymphoblastic leukemia/lymphoma in a child: Report of a rare case

  • Paulo Victor Mendes Penafort,
  • Lady Paola Aristizabal Arboleda,
  • Sérgio Takashi Kussaba,
  • Izilda Aparecida Cardinalli,
  • Regina Maria Holanda de Mendonça,
  • Márcio Ajudarte Lopes,
  • Pablo Agustin Vargas,
  • Alan Roger Santos-Silva

Journal volume & issue
Vol. 9
p. 100193

Abstract

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B-cell lymphoblastic leukemia/lymphoma (B-ALL/LBL) is a type of malignancy involving uncontrolled proliferation of B-precursor lymphoid cells. This case report delineates B-cell lymphoblastic leukemia/lymphoma (B-ALL/LBL) manifesting in the mandible and medullary regions of a 10-year-old female. Clinically, an irregular swelling with bone cortical destruction and weight loss was observed. Histopathological examination revealed proliferation of CD10, CD43, CD79a, PAX-5, TDT, CD99, and FLI-1 positive small round blue cells, with a 49% lymphoblast infiltration in the bone marrow. Chemotherapy was administered, leading to disease control during the 5-year follow-up.