Abstract
Aim:
 Lymphadenopathies occupy an important part of pediatric hematology-oncology practice. More than 95 per cent of cases are known to be reactive, and infection-related. Lymphadenopathies are followed up at 1-3-6 month intervals, and the process requires ultrasound follow-up. Our study aimed to compare the persistent and non-persistent cases.
 Results: In our study, lymphadenopathy cases (n=93) admitted to our pediatric haematology-oncology outpatient clinic between 2022-2023 were examined and diagnosed; reactive lymph nodes (n=76)(81. 7%), infectious mononucleosis (n=9)(9. 7%), tuberculosis (n=1)(1%), lymphoma (n=2)(2%), benign cytology (n=2)(2%). Mean age ± standard deviation (SD); 8. 2±4. 4, number of girls; 42 (45. 2%). The median time to resolution of acute (n=8)(8. 6%), subacute (n=26)(28%), chronic (n=59)(63. 4%) lymphadenopathy was 1 [5-155] week. Cases with and without ultrasonographic disappearance of lymphadenopathy were compared; the mean hemoglobin value (g/dL) (12. 7±1. 4 vs. 12. 3±1. 2, respectively) (p=0. 047) and platelet value (x10³/mm³) (334. 2±108. 012 vs. 288. 4±89. 5, respectively) (p=0. 047) were higher and the presence of hilar vascularity on ultrasonography (76% vs. 98. 1%) (p=0. 001) was LOWER in those who disappeared compared to those who did not disappear. There was no correlation between hypoechoic lymph node, indistinct border, necrosis, fatty hilus, perinodal cortical vascularity, cortical thickening, presence of lymph node in more than one region and non-loss of lymph node.
 Conclusion: In conclusion, it has been shown that in the presence of lymphadenopathy, elevated hemoglobin and platelets, together with the presence of hilar vascularity, may be predictive findings in the failure of the lymph node to disappear.
 Key words: lymphadenopathy, ultrasonography, haemoglobin, platelets, childhood
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