and external resources Cross section of a human lung. The white area in the upper lobe is cancer; the black areas are discoloration due to smoking . ICD - 10 C 33. - C 34. ICD - 9 162 DiseasesDB 7616 MedlinePlus 007194 eMedicine med/1333 med/1336 emerg/335 radio/807 radio/405 radio/406 MeSH