What is the fine-grained topic of the following text: Melanoma diagnosis Terry was swiftly diagnosed as having a melanoma the size of a pea (6mm) inside his left eye, and, despite having read some “horror stories” on the internet, Terry was reassured by Mr Hungerford that his chances of survival and retaining his vision were extremely good. Only return the topic.
Diagnosis and prognosis of melanoma in the eye