Is there any way to reduce the large fat pooch (at the pelvic area) that is left after a hysterectomy?

The fatty pooch that you refer to is normally a hysterectomy scar that tightly bound down to deeper tissue with fat and skin piling up above the scar tissue, leading to an overhang.  Obviously, a tummy tuck would remove this and other skin and soft tissue above it.  However, if this is the only problem, then this bit of skin and soft tissue can be surgically excised, but this will lead to a longer scar.  A very quick and efficient way of dealing with this type of anchored scar tissue is to liposuction the area above the scar, and then use a "pickle fork".  This is a surgical instrument which looks like something you would pick up a pickle with at a fancy party.  The pickle fork is used to release the scar tissue binding the skin down to the deeper tissue.  This plus liposuction can usually remove not only the overhang, but also the depressed scar with minimal incisions and quick recovery. 

An overhang after an abdominal incision in patients with underlying abdominal skin laxity is frequent, and is due to contraction of the scar. It will improve somewhat over many months, but once it is stabilized, the only way to correct is to resect some skin, and the scar: which can involve a full abdominoplasty, but can also sometimes be done as just a scar revision or miniabdominoplasty under local anesthesia.   An in person consultation is necessary for full evaluation.

Often after a C-section, the scar and skin below tightly adhere to the abdominal wall, while the looser skin above can have fullness and prominence. In some cases, this is an ideal indication for a mini-tummy tuck. If the fullness is below the scar, liposuction may be the best treatment. 

Is possible to correct abnormalities of your Mas pubis. It really depends on what it's also going on at your C-section scar and with your abdominal wall. I recommend several board-certified plastic surgeons. 

Without an exam or pictures, it is difficult to tell you much.  My guess would be that liposuction (if the pooch is fat) or a full or mini tummy tuck (if there is separation of the stomach muscles) should take care of it for you.

After gyn surgery the low abdominal incision may leave a shelf above the incision and accentuate any fat below the incision.  In most cases, the best option is a tummy tuck / abdominoplasty to remove any redundant or loose skin and also to tighten the underlying muscles.  Without seeing you in person, it is impossible to give you specific advice for your situation.  A consultation is the best recommendation.Good Luck

These areas that after created after a hysterectomy can be well treated with a tummy tuck, which addresses the skin excess fat and muscle weakness of the abdomen.

If the only issue is fat than this can be corrected with liposuction only. A photograph a physical examination would be necessary for a more particular opinion.

It is unclear whether you are referring to excess lower abdominal skin and/or excess fatty tissue of the pubic mound itself.  It is possible to reduce the size of both of these areas using tummy tuck, liposuction or a combination of procedures.  A plastic surgeon will be able to give you a good idea of the results that could be achieved.

Pictures would be helpful to determine what may be most appropriate.  I would search for the surgeon who you
feel is most likely to give you
the best results. Look at reviews and before and after pictures on that
surgeon's website. Kenneth Hughes, MDLos Angeles, CA