So you have a forward group that is positive with anti-A, -B, -AB, -D and the control; and the reverse group is positive in all cells and the antibody screen and panel (and, I imagine the auto control) is positive in everything. It sounds as though you do not have a single negative result.
This sounds to me like a cold AIHA, possibly due to medication, possibly secondary to another hematological disease (leukaemia?), possibly post infection.
Do you have any other clinical information you can give us?