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SUMMARY
Smooth muscle tumors are the most common type of uterine neoplasm. The vast majority
of such tumors are benign leiomyomas. Leiomyosarcomas fortunately are relatively infrequent.
A variety of gross and microscopic features may be found in both benign and malignant
tumors and great care must be taken not to mistake leiomyomas with atypical or unusual
features of leiomyosarcomas. Individual features, such as hypercellularity, necrosis,
nuclear atypia, mitotic figures, and intravascular growth, are ominous but must be
interpreted with caution because variants of benign leiomyoma may contain such changes.
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© 1994 Elsevier B.V. Company. Published by Elsevier Inc. Published by Elsevier Inc. All rights reserved.
