Thank you to all for responses.
As we had never heard of cholangiocarcinoma we think that finding out more about this form of cancer would be good . Any research may or maynot connect the four close family members cancers which are
1 Melanoma - Ankle We have applied for Death cert to see what was listed as cause of death
2 Testicular Cancer (Medical records were obtained and T cell lymphoma was mentioned)
3 Lung which spread to brain (Believe Dr said it was adenocarcenoma that can occur in the lung of a non smoker as well)
This female was given drugs in the 1950's to prevent misscarriages. Could be DES but unable to get the medical records as they date too far back
4 Cholangiocarcinoma Female passed away March 2011
Could be all unrelated cancers but seeing cholangiocarcinoma is rare will be interesting to find out more on this and if the other 3 family members cancers are in anyway connected to Cholangiocarcinoma