대한대장항문학회

MPS is not a well-known disease in this nation. Accordingly it is easily overlooked.<br>However its differentiation from the cancer must always be borne in mind, because of<br>its similarity to cancer in both gross and microscopic aspects. Histologic characteristics<br>of MPS are as follows:<br>1) Obliteration of the lamina propria by fibroblasts and smooth muscles from the<br>muscularis mucosae<br>2) Thickening of the muscularis mucosae<br>3) Erosion of the mucosa<br>4) Displaced glands into the submucosa<br>Recently the authors experienced one case of MPS. That case is presented in this<br>paper along with a review of the literatures on this subject.<br>