<prompt> A pt. comes with stony hard, painless lymphnode in left supraclavicular fossa A biopsy report states Sq cell Carcinoma. What is the diagnosis :Stomach carcinomaBreast carcinomaLung carcinomaPancreas carcinoma  <response>: Ans. is c ie. Lung Carcinoma.Out of the 4 options only lung Ca is one which is of squamous cell histology Squamous cell Ca is the mostMalignancy - risk is 40 times more than a normally placed testis.common type, about 40 - 45 of lung carcinoma, at least in smokers and in India.Rest 3 have squamous cell Carcinoma in even less than 5 - 6 of cases.Stomach -MC is Adenocarcinoma 95Pancreas -MC is Duct cell adenocarcinoma 85 - 90Breast -Intraductal adenocarcinoma 85 