What Could Cause Transmission Fluid To Leak on 1993 Dodge Ram Van B250

I'm leaking transmission fluid from the middle section of my van. There is a little puddle. I guess it is the seals but what else could it be and what should I do put alot of transmission fluid in there and drive it to the mechanic. I just got it back from him after he put a cable in, 'cause it wasn't shifting right. It wasn't leaking, before I took it there.

Asked by for the 1993 Dodge Ram Van B250
front pump ,front pump seal, pan gasket .