Diagnosis of Submucosal Tumor by Injecting a Water Soluble Contrast Medium: Development Pattern and Growing of Tumors

ASAKI, S., IIATORI, S., NISHIMURA, T., SATO, A., HANZAWA, K. and GOTO, Y. Diagnosis of Submucosal Tumor by Injecting a Water Soluble Contrast Medium: Development Pattern and Growing of Tumors. Tohoku J. exp. Med., 1984, 143 (4), 385-395 - With the application of our endoscopical method of contrasted X-ray imaging, gastric submucosal tumors were studied with chief regards to their modes of growing up and patterns of development. It has become known that, of extragastric developing tumors, larger ones tend to show Pattern IVa and smaller ones Pattern IVb. Generally, the tumors showed a tendency of becoming larger in older patients. Periodical checking disclosed about 15% of the tumors growing larger with the lapse of time. It has been surmised that as tumors grow up, their development possibly turns from intra-gastric to intramural and mingled in pattern. Their modes of growing could be classified as follows: 1) Abruptly growing large at a certain time and then remaining without notable changes, 2) step-by-step enlarging, and 3) gradually growing up straight forwardly with years.