Has any one out there survived mantle cell lymphoma?

Definitely Yes: Mantle cell lymphoma responds very well to conventional chemotherapy but has a propensity to relapse. Incorporation of maintenance treatment or autotransplant has prolonged remissions and survival but a stem cell transplant using a matched sibling or unrelated donor can lead to a cure albeit with potential complications from graft-versus-host disease.

Yes: Controlis quite high, but it needs aggressive treatment.