Effect upon the Descending Duodenum by Carcinoma of the Hepatic Flexure

The virtual contiguity of the hepatic flexure to the descending duodenum allows ready spread of a neoplasm.1,10 Figures 10-11 and 10-12 illustrate early stages of this process. The occult nature of carcinoma of the right colon is well known, and the presence of fever, abdominal distress, and a palpable epigastric mass may lead to radiologic investigation being initiated with an upper gastrointestinal series. In such cases, striking changes involving the descending duodenum may include extrinsic pressure defects and, occasionally, gas-containing cavities (Fig. 10-13a). These may be very misleading unless a barium enema study is done and the primary site in the hepatic flexure of the colon is revealed (Fig. 10-13b).

Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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