The four sentences (labelled 1, 2, 3, and 4) given in this question, when…

The four sentences (labelled 1, 2, 3, and 4) given in this question, when properly sequenced, form a coherent paragraph. Decide on the proper order for the sentences and key in this sequence of four numbers as your answer.

1. The eventual diagnosis was skin cancer and after treatment all seemed well.

2. The viola player didn’t know what it was; nor did her GP.

3. Then a routine scan showed it had come back and spread to her lungs.

4. It started with a lump on Cathy Perkins’ index finger.