Hello, You can bring him to India for treatment given that Bangladesh has a dearth of good hospitals. You can visit any major metropolitan city in India for Lung Cancer treatment. Given it is in Stage 4, only Chemotherapy will be administered. In case of Chemotherapy, the prices depend on the drug prices, the number of cycles the drug is administered and whether you get your father treated in a Government/ Charitable Hospital or a Private Hospital.
The cost of Chemotherapy are as follows:
- Government Hospital: Here they provide affordable/free treatment depending on your economic condition but the waiting period can be long. The approximate cost per cycle is 200 USD - 500 USD (14,300 INR - 35600 INR)
- Private Hospitals: Here the treatment would come at a premium, but you will not have to wait. The approximate cost per cycle is 1200 USD - 1500 USD (85,300 INR - 107,000 INR)
Hope my answer helps you out! You can find hospitals for lung cancer on this page - Lung Cancer Treatment Hospitals in India.