A rare occurrence of hairy cell leukemia in a congolese child: a presentation and challenge of diagnosis in low resource settings.

Background: Hairy cell leukemia is a rare form of leukemia and has been rarely reported in African and pediatric population.

Observation: We are reporting a 4-year-old child who was received for investigation for persistent anemia, prolonged fever, and thrombocytopenia. Bone marrow aspiration showed hypercellular marrow with cells characterized by irregular windblown-appearing cell borders with pseudopod-like projections.