Medicine...

Generally this disease is considered to be incurable.  But lifespan varies widely (1 to 20 years.)

According to Ayurveda and even modern medicine it is said that most cancers happen due to reduced immunity.

Immunity boosting programme-

Yoga
# All restorative and relaxing postures (use of props is invaluable.) Shavasana and meditation techniques will give necessary mental health and physical rejuvenation.
# All inversions with props (very slowly, step by step and with hierarchy. Depending on age, stage, fitness, condition, type of medicine -whether radiation chemo or other medicine).
# Pranayama, sleeping on pillows w/o retention. Nadi shodhana w/o retention. Bhramari, Shitali, sadanta and shitkari.
Only advanced & experienced yoga teachers with anatomical and physiological knowledge should handle such cases.

Diet and lifestyle -
# Vitamin C = citrus fruits,  lime, spinach, आमला, cabbage etc.
# Omega 3 fatty acids,
# Healthy proteins like broccoli, mushroom, soya etc.
# Yellow foods like lime and turmeric.
# गेहू के तृणांकूर का रस।
# Cultivating a healthy and positive mental attitude. Love, care and support of near and dear ones.