Introduction: Recurrent fever and organ abscesses in early childhood should prompt consideration of underlying immunological or malignant disorders. Case presentation: We had a 4-year-old boy with a background history of failure to thrive who initially presented with 7 days of fever and 3 weeks of bilateral cervical lymphadenopathy . Clinical examination revealed hepatosplenomegaly . Abdominal ultrasonography demonstrated multiple hypoechoic lesions in the liver and spleen, contrast-enhanced computed tomography confirmed multiple hepatic and splenic abscesses. Inflammatory markers were markedly elevated, however repeated blood cultures were sterile. Extensive evaluation for infectious aetiologies including melioidosis, tuberculosis, toxoplasmosis, toxocariasis, aspergillosis, Epstein-Barr virus and cytomegalovirus was negative. Bone marrow examination was normal, lymph node biopsy showed reactive lymphadenopathy . Serum immunoglobulin levels and nitro-blue tetrazolium test were normal. Child was treated with intravenous meropenem for 6 weeks, following which imaging confirmed complete resolution of abscesses. He was discharged on oral ciprofloxacin. Two months later, he re-presented with on month of intermittent fever, initially attributed to recurrent respiratory infections. Examination revealed wasting and hepatosplenomegaly . Investigations demonstrated pancytopenia with lymphocyte predominance. peripheral blood film showed no abnormal cells. Lymphocyte subset analysis revealed reduced counts. Repeat bone marrow biopsy at this stage revealed features consistent with anaplastic lymphoma with lymphohistiocytic variant. The child was commenced on chemotherapy with oncological management. Conclusion: This case highlights the diagnostic complexity of paediatric fever with organ abscesses and emphasizes the importance of continued surveillance and re-evaluation, as underlying malignancy may become apparent only later in the disease course.