Hi and welcome to HCM,thank you for your query.
It may be lmyphoma but it have to be confirmed by biopsy
. you didnt mention what exactly this previous biopsy showed. if this is just skin cancer
then I don think this is related to your risk of lymphoma
. So your lack of energy probably isnt sign of new cancer.it can be sign of various other diseases. Lymphomas can be also ruled out by certain blood tests and sternal punction.
Wish you good health. Regards.