<unk> s are usually caused by a weakness of the surgical wounds, which may be caused by hematoma, seroma, or infection, all of which result in decreased wound healing. They may also be caused by increased intra-abdominal pressure due to a chronic cough (as in COPD), constipation, urinary obstruction (as in BPH), pregnancy, or ascites. They can also result from poor surgical technique.
Incisional hernia
Internal hernia
Perineal hernia
Fascial hernia
Epigastric hernia
Retrocolic hernia
Spigelian hernia
Obturator hernia