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**Hobnail morphology - free (luminal) surface area > attached/basal surface area. | **Hobnail morphology - free (luminal) surface area > attached/basal surface area. | ||
**Hyperchromasia. | **Hyperchromasia. | ||
**Round or oval nuclei. | **Round or oval nuclei +/-enlargement +/-multinucleation.<ref name=pmid21252716/> | ||
*Spaces are typically seen between the cells<ref name=pmid21252716>{{Cite journal | last1 = Travis | first1 = WD. | last2 = Brambilla | first2 = E. | last3 = Noguchi | first3 = M. | last4 = Nicholson | first4 = AG. | last5 = Geisinger | first5 = KR. | last6 = Yatabe | first6 = Y. | last7 = Beer | first7 = DG. | last8 = Powell | first8 = CA. | last9 = Riely | first9 = GJ. | title = International association for the study of lung cancer/american thoracic society/european respiratory society international multidisciplinary classification of lung adenocarcinoma. | journal = J Thorac Oncol | volume = 6 | issue = 2 | pages = 244-85 | month = Feb | year = 2011 | doi = 10.1097/JTO.0b013e318206a221 | PMID = 21252716 }}</ref> - '''important'''. | *Spaces are typically seen between the cells<ref name=pmid21252716>{{Cite journal | last1 = Travis | first1 = WD. | last2 = Brambilla | first2 = E. | last3 = Noguchi | first3 = M. | last4 = Nicholson | first4 = AG. | last5 = Geisinger | first5 = KR. | last6 = Yatabe | first6 = Y. | last7 = Beer | first7 = DG. | last8 = Powell | first8 = CA. | last9 = Riely | first9 = GJ. | title = International association for the study of lung cancer/american thoracic society/european respiratory society international multidisciplinary classification of lung adenocarcinoma. | journal = J Thorac Oncol | volume = 6 | issue = 2 | pages = 244-85 | month = Feb | year = 2011 | doi = 10.1097/JTO.0b013e318206a221 | PMID = 21252716 }}</ref> - '''important'''. | ||
*Limited extent: | *Limited extent: |
edits