Inflammatory changes and suppurative processes in the omentum, although not often reported in the literature, are probably fairly common lesions. They are likely to be overlooked as such and their symptoms attributed to some other cause. In a recent report, Vigyázó1 states that he found less than 100 cases of inflammatory tumors of the omentum of all types in the literature. Such cases may or may not follow operations in the abdomen. In the first instance they usually result from extension of an inflammatory process from some contiguous organ or from the presence of a foreign body. The postoperative types have been attributed to ligatures harboring micro-organisms or to ligation of inflamed omental tissue during a herniorrhaphy, appendectomy or other operation involving the omentum, especially if it is resected.
Walther2 states that the omentum is found altered in patches in about 25 per cent of appendectomies. It is,