Subtypes of lung cancer:-
1. Squamous cell cancer-
Most common variant in India.
Smoking is a risk factor.
Central in location.
Local growth is surgically resectable.
Cavity formation is seen.
2. Adenocarcinoma-
Most common variant of lung cancer overall.
Most common lung cancer among non smokers.
Peripheral in location.
Transbronchial spread i.e. it arises at one lobe and spreads to the another lobe.
3. Small cell carcinoma/Oat cell carcinoma-
Most aggressive variant.
Smoking is a risk factor.
Central in location.
It exhibits micrometastasis.
It has worst prognosis.
4. Large cell carcinoma-
Observed in Non smokers.
Peripheral in location.
This is associated with Estrogen production which manifests as Gynecomastia.
I hope this will help you to distinguish between the various subtypes.
Thank you
-Md Mobarak Hussain (Maahii)
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