The Diagnostic And Prognostic Role Of Immunohistochemistry In Head & Neck Tumours Along With Radiological & Histopathological Study

Background: Head & neck tumors are defined as benign, premalignant & malignant tumors above the clavicles, except the tumors of brain, spinal cord and esophagus. This includes tumors of paranasal sinus, nasal cavity, salivary glands, thyroid and upper aerodigestive tract, lymph nodes of neck, skin & its appendages, soft tissue tumors, midline carcinomas & metastatic tumors. Ultrasonography, computed tomography, magnetic resonance imaging were the modalities for initial evaluation. Histopathology was the GOLD standard for diagnosis followed by IHC for confirmation because correct diagnosis & cancer subtyping of the neoplasia is essential for successful therapy and prognosis. Materials & Methods: Study was conducted for 2 years with 100 specimens of head & neck tumors. Thorough Radiological investigation was done followed by Histopathological examination including biopsy & whole resected specimens. IHC markers appropriate to the histopathological diagnosis was done. Results: Among 100 patients of head & neck tumors, most belonged to 5th decade with male: female ratio of 2.3:1. Squamous cell carcinoma (66%) followed by Lymphoma(11%), tumors of salivary glands(8%), metastatic lymphadenopathy(7%) were the lesions present. SCC was most common carcinoma in oral cavity, larynx, nasopharynx and ear with positive p63 marker. 1 case of Basal cell carcinoma with positive BerEP4 & in NHL, salivary gland tumors & Metastatic lymphadenopathy panel of IHC were included for confirmation. Conclusion: Immunohistochemistry has a diagnostic & prognostic role in Head & Neck tumors along with Radiological & histopathological examination.