A Prospective Clinicopathological Study of Cervical Lymphadenopathy in a Head and Neck Unit of a Tertiary Referral Centre

Background and Aims: This study aims to investigate the clinicopathological profile of cervical lymphadenopathy in a tertiary referral centre. The findings will contribute to a deeper understanding of the disease spectrum, aid in accurate diagnosis, and help in improving patient treatment and outcomes. Methodology: This is a prospective study conducted in the Department of ENT, Head and Neck Surgery, Apollo Hospital, Chennai, between June 2022 and May 2023. The clinicopathological profile of all patients was analysed. The final histological diagnosis and the preoperative Fine Needle Aspiration Cytology (FNAC) were correlated. The primary tumour was identified in cases with metastatic secondary tumours in the neck. Results: Among the 80 patients in our study, 67% had a benign aetiology (most common was tuberculosis), and 33% had a malignant aetiology (most common was Hodgkin’s Lymphoma). Gender distribution was equal, with those between the ages of 35 and 60 more frequently affected. The nasopharynx (30%) was the most likely location of the occult primary, followed by the thyroid (20%) and larynx (20%). In detecting TB, FNAC had a sensitivity of 75.5% and a specificity of 98%; in detecting lymphomas, it was 64% and 100%; in detecting metastatic secondaries, it was 80% and 100%; and in detecting reactive lymphadenitis, it was 79% and 86%. Conclusion: Cervical lymphadenopathy is a common entity requiring careful evaluation and treatment. PET scans prove invaluable in detecting occult primary tumours. FNAC is an initial, cost-effective diagnostic tool. However, biopsy is indicated in specific conditions to obtain accurate diagnosis to enable prompt treatment.