Introduction: Uterine smooth muscle tumors are the most common tumors of female genital tract and among these leiomyomas predominate. Leiomyomas most commonly occur during the reproductive years in women with manifestation of abnormal uterine bleeding and abdominal pain. These exhibit wide range of morphological variants and secondary changes. Here, we present a study of 70 cases, which includes rare variants and degenerative changes in leiomyomas.
Materials and methods:A retrospective study conducted in a department of pathology for a period of 1 year from January 2019 to December 2019 at a tertiary care hospital. Seventy patients were diagnosed as leiomyoma on histopathological examination of 124 hysterectomy specimens and one myomectomy specimen and included in the study. Detailed microanatomic features were studied and recorded. Result: Uterine leiomyoma was most common among the age-group of 41-50 years of age (64.21%). Most common location was intramural (54.29%). Secondary changes were observed in 48 cases (68.57%). Most common secondary change was hyaline degeneration noted in 38 cases (79.17%). Classical variant of leiomyoma was seen in 66 cases (94.28%) followed by one case (1.43%) each of symplastic, neurilemmoma-like, lymphocyte-rich, and cellular leiomyoma and leiomyomas with rare secondary changes like osseous and chondroid metaplasia. Conclusion: Uterine smooth muscle tumors are commonly seen in perimenopausal females. Leiomyoma is associated with various pathologies comprising of degenerative changes and rare variants which sometimes can be misdiagnosed as malignancy. Hence, a vigilant histopathological examination is necessary to identify the various spectrum of uterine leiomyomas and associated pathologies.