Diagnostic methods, chemical, bacteriological and microscopical : a text-book for students and practitioners . color, but take on a more brownish tint,which is due to the presence of hematin. Boas-Oppler Bacillus. This organism is found quite commonly in patients suffering with carci-noma of the stomach, and is almost always absent in nonmalignant is found more frequently in the gastric contents at a time when lactic acidis present in large amounts, so that in the incipient stages of carcinoma these 58 DIAGNOSTIC METHODS. organisms may be absent. These bacilli are very long (3 to 10
Diagnostic methods, chemical, bacteriological and microscopical : a text-book for students and practitioners . color, but take on a more brownish tint,which is due to the presence of hematin. Boas-Oppler Bacillus. This organism is found quite commonly in patients suffering with carci-noma of the stomach, and is almost always absent in nonmalignant is found more frequently in the gastric contents at a time when lactic acidis present in large amounts, so that in the incipient stages of carcinoma these 58 DIAGNOSTIC METHODS. organisms may be absent. These bacilli are very long (3 to 10 microns),I micron broad, and are frequently joined end to end forming very long are readily stained with the usual aniline dyes and by Grams method and,on treatment with iodin, take on a brown color which distinguishes them fromthe large mouth bacillus (leptothrix buccalis), which stains blue with organism is not absolutely pathognomonic of carcinoma of the stomach,but is found in 75 to 85 per cent, of all cases, being rarely present in dilatationor benign stenosis of the Fig. 16.—Boas-Oppler bacilli. (Hemmeter.) Sarcinae. Occasionally in normal gastric juice and especially in cases of dilatationwith marked fermentation one finds the so-called sarcince ventriculi whichare cocci arranged in squares or tetrahedra which resemble, very much, cottonbales. These organisms have no pathologic significance, but are indicativeof stagnation of gastric contents. Along with these sarcinag one may find largenumbers of yeast cells. Protozoa. These unicellular parasites have been occasionally found in the gastriccontents. Flagellates, amebas, and monads seem to be more frequent than theother types of protozoa. They seem to be more commonly found in cases ofcarcinoma of the stomach; quoting from Simon, from the available data therecan be no question that the presence of protozoa in the stomach contents is sug-gestive of nonobstructive carcinoma. Fragments of
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