Occult Primary with Cervical Secondary-Role of CT Scan and Evaluation Under Anesthesia

The potential of CT, MRI or both to detect a primary tumor ranges from 9.3 to 23% rising to 60% when suspicious radiological findings direct subsequent endoscopic biopsies (Zhuang et al. in Mol Clin Oncol 2:917-922, 2014). Prospective case Study. To know the sensitivity, specificity accuracy rate and P value of CT scan and upper aero digestive tract endoscopy with palpation of nasopharynx and oropharynx to search the primary site of cancer. 53 patient of occult primary with FNAC proved metastatic squamous cell carcinoma were evaluated to find out the sensitivity, specificity, accuracy rate and P value of imaging study and rigid endoscopic examination of upper aero digestive tract with through palpation of oropharynx, nasopharynx and evaluation under anesthesia (EUA). Punch biopsies were taken from suspicious areas and sent for histopathology examination (HPE). Taking HPE as a gold standard (Ishak et al in Rawal Med J 35:209-213, 2010) sensitivity of both EUA and imaging was found to be 100%, Specificity and diagnostic accuracy of EUA and imaging were 96.77, 83.87, 98.11 and 90.57% respectively. P value was <0.0000001 which is highly significant.