Actinomycosis in the sigmoid colon is rare, judging by the very few cases reported in the literature. The fact that correct diagnosis was not made preoperatively or during life in any of the recorded cases of colonie actinomycosis justifies special consideration of the disease. There are only six reported cases of primary actinomycosis of the sigmoid colon; in four of these, an actinomycotic mass was excised under the impression that it was a malignant mass. The case presented here is of interest as the seventh report of this disease and the first reported instance of an actinomycotic diverticuloma.
REPORT OF A CASE
A 48-year-old white woman was admitted to the Hahnemann Hospital of Philadelphia complaining chiefly of intermittent colicky pain in the left lower quadrant of the abdomen of three years' duration, which had become much severer in the preceding two months. These attacks were associated with increasing constipation, attacks