NURS 203 Lecture Notes - Small-Cell Carcinoma, Papanicolaou Stain, Pap Test
Document Summary
Peripherally located vs. centrally located: centrally located (mainstem bronchus): Include squamous cell carcinoma and small cell carcinoma. These are generally centrally located, hence mainstem bronchus types of locations. Squamous cell are more common than small cell carcinomas: peripherally located: Adenocarcinomas (the more common primary lung cancer, more common than squamous) are more peripheral than central. Shifted to the periphery b/c of the filters of the cigarettes. The filters prevented the large carcinogens from passing in, but the small carcinogens still passed through, and they are not trapped in the main stem, but trapped in the periphery. There are at least 3 or 4 types of adenocarcinoma. One obviously does have a smoking relationship, while the others do not. The ones that do not have a smoking relationship include bronchiolar alveolar carcinoma, and large cell adenocarcinoma of the lung (scar cancers). Cytology: know what squamous cancer looks like with a pap smear. Papanicolaou stain is only done for cervical carcinoma.
