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首页> 美国政府科技报告 >Mesenchymal Tumors of the Uterus. VI. Epithelioid Smooth Muscle Tumors Including Leiomyoblastoma and Clear-Cell Leiomyoma. A Clinical and Pathologic Analysis of 26 Cases.
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Mesenchymal Tumors of the Uterus. VI. Epithelioid Smooth Muscle Tumors Including Leiomyoblastoma and Clear-Cell Leiomyoma. A Clinical and Pathologic Analysis of 26 Cases.

机译：子宫间充质瘤。 VI。上皮样平滑肌瘤包括平滑肌母细胞瘤和透明细胞平滑肌瘤。 26例临床病理分析。

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摘要

Twenty-six cases of atypical smooth muscle tumors of the uterus, including leiomyoblastoma, epithelioid leiomyoma, clear-cell leiomyoma, and plexiform tumorlet, are presented. The characteristic microscopic feature serving as the basis for inclusion in this study is the rounded to polygonal shape of the majority of cells instead of the elongated blunt-ended shape of smooth muscle cells seen in the typical leiomyoma. Mixtures of epithelioid, clear-cell, and plexiform patterns occurred with sufficient frequency to indicate that such patterns are variants of a single entity. A transition to typical smooth muscle cells was found in most instances, confirming the smooth muscle origin of these tumors. Features related to a favorable prognosis include the the presence of clear cells, and expansile tumor margin, extensive hyalinization, and absence of extensive necrosis as seen microscopically.

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