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Ultrastructure of Adenocarcinoma of the Stomach by Scanning Electron Microscope
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KMID : 0357919850190010013
Abstract
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³ª ±× Áß°£ÇüÅ´ ±¸º°ÀÌ ¾î·Á¿üÀ¸¸ç, ºÒ±ÔÄ¢ÇÑ fold, ¼¼Æ÷ÀÇ ´ÙÇüżº, ´ÙÇüżº ¹ÌÀ¶¸ðµéÀº
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#ÃÊ·Ï#
The author studied 11 cases of adenocarcinoma of the stomach confirmed by
gastrofiberscopic biopsy before in order to differentiate between differentiated and
undifferentiated adenocarcinma by scanning etectron microscope. Light and transmission
electron microscopic examination were done, too. Seven of them are differentiated
accompanied by severe intestinal metaplsia and four of them are undifferentiated with
rearly focal intestinal metaplasia. Two of the undifferentiated cases shows focal tubular
differentiation on the superficial region of the mucosa.
Microvilli on the free border are long, regular on the differentiated type but in state of
variable loss of microvilli under the transmission electron microscope. Number and
density of the mucous granules are variable.
Scanning electron microscopic examination shows prominent disorganization of the
folds, cellular pleomorphism and pleomorphic microvilli are suggestive of early marker of
neoplastic transformation. The size of them are 0.6cm and 1.2 cm on the differentiated
and undifferentiated type respectively.
Disorganization of the folds is an important differential point between differentiated
and undifferentiated type on the lower power examination.
Development of folds, furrow, and hemispheric colliculi are more perminent on the
differentiated adenocarcinoma. Presence of striated border, partial or complete loss of
microvilli and intestinal metaplasia on the undifferentiated and differentiated
adenocarcinomas are consistent with origin from common precursor cells.
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