What are clinical features of incisional hernia?

Hx (previous trauma/surgery, hx of wound infection) age (more elderly females) sx (swelling and pain, may be intestinal obstruction) signs (expansile impulse of cough, reducible, defect throug the scar after reduction) Type 1 (midline upper or lower incision wide muscular defect w/smooth regular margins, reduced spontaneously as soon as pt lies down, risk of strangulation negligible) Type 2 (lateral abdomen risk of strangulation more)