50. Planocellular carcinoma of the lung: Difference between revisions

We can see cartilage and respiratory epithelium, so we know that this is a bronchus. We can divide the slide into 5 “parts”:

'''Risk factors''': Smoking[[File:Squamous carcinoma of lung part 1.png|thumb|From part 1. Shows normal, healthy respiratory epithelium.]]'''Theory''': Squamous cell carcinoma in the lung usually occurs centrally, around the hilum. It shows symptoms earlier than adenocarcinomas and large cell carcinomas, which grow peripherally. However, also because of the central location is surgical removal of squamous cell carcinomas more difficult than for the peripheral-growing cancers. In this slide we can see several stages of cancer development, from hyperplasia to metaplasia to dysplasia to cancer. Squamous cell lung cancer can metastasize into pericardium, mediastinum, aorta and even the heart.[[File:Squamous carcinoma of lung part 2.png|thumb|From part 2. Shows goblet cell and basal cell hyperplasia. Basal cells are the cells that are in contact with the basement membrane.|left]]