Discoloration of the umbilicus and the umbilical area may be due to coloring agents within the abdominal cavity or to such agents in the umbilical area of the abdominal wall. The importance of such discoloration lies in its diagnostic value; the significant, theoretical consideration of such discoloration is its mechanism of production.
In the following case, the discoloration supported the clinical impression of intraabdominal hemorrhage, and was due to the direct transmission of the color of free intraabdominal blood through a thin umbilicus.
Report of Case
—Abdominal pain following automobile accident.
—This 7-year-old white boy was struck by an automobile about 4 p. m. on March 16. Apparently, the auto struck the boy's right anterolateral chest wall as he was walking across a street. He was temporarily dazed but was not unconscious. He did not vomit. He was taken immediately to the emergency room of University