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EVALUATION OF THE COLOR‐EMPHASIS SYSTEM AS AN ENDOSCOPIC DIAGNOSTIC METHOD: IS THE ADOPTED TYPE HEMOGLOBIN INDEX COLOR EMPHASIS USEFUL FOR THE DIAGNOSIS OF SUPERFICIAL TYPE COLON TUMORS?
Author(s) -
Tamura Satoru,
Ookawauchi Kohji,
Tadokoro Takehisa,
Higashidani Yoshifumi,
Yokoyama Yuichi,
Onishi Saburo
Publication year - 2002
Publication title -
digestive endoscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.5
H-Index - 56
eISSN - 1443-1661
pISSN - 0915-5635
DOI - 10.1046/j.1443-1661.14.s1.7.x
Subject(s) - medicine , emphasis (telecommunications) , lesion , hemoglobin , radiology , pathology , computer science , telecommunications
The difficulty in an endoscopic diagnosis of colorectal tumors depends mainly on their gross configuration. As the superficial flat type and depressed type tumors are usually detected endoscopically by a faint redness on their surface, we evaluated the usefulness of an adopted type hemoglobin index color emphasis system in the lesion of a non‐granular (NG) type laterally spreading tumor (LST). The NG‐type LST was composed of only a flat surface without any nodules. The frequency of Tis was 20.2% and that of T1/T2 was 15.7% in the lesion of the NG‐type LST. Results showed that the adopted type hemoglobin index color emphasis system can emphasize the color level, as the redness and whiteness intensified in this system. The degree of redness and whiteness depended on the emphasis level, and the clarity of colors became clearer in level 5 than level 3 in a lesion of the NG‐type LST. This system may thus contribute to the endoscopic diagnosis of flat and depressed type colorectal lesions.