GALLERIA

1 This is a squamous cell carcinoma of the lung that is arising centrally in the lung (as most squamous cell carcinomas do). It is obstructing the right main bronchus. The neoplasm is very firm and has a pale white to tan cut surface.	2 This is a larger squamous cell carcinoma in which a portion of the tumor demonstrates central cavitation, probably because the tumor outgrew its blood supply.Squamous cell carcinomas are one of the more common primary malignancies of lung and are most often seen in smokers.	. 3 This is another sqamous cell carcinoma that extends from hilum to pleura. The black areas represent anthracotic pigment trapped in the tumor
4 Multiple variably-sized masses are seen in all lung fields. These tan-white nodules are characteristic for metastatic carcinoma. Metastases to the lungs are more common even than primary lung neoplasms simply because so many other primary tumors can metastasize to the lungs. Even the hilar nodes in this photograph demonstrate nodules of metastatic carcinoma. The nodules are usually in the periphery and do not cause major obstruction.	5 Here are larger but still variably-sized nodules of metastatic carcinoma in lung.