Smooth muscle tumors of uncertain malignant potential or atypical leiomyomas: A long-term evaluation of surgical outcomes and clinicopathological features.

OBJECTIVE

The Primary Objective of this study was to analyse reproductive outcomes in patients with STUMP (Smooth Muscle Tumour of Uncertain Potential) or ALM (Atypical Leiomyoma) who underwent fertility-preserving surgeries. Secondary Objectives were to analyse long-term prognosis for these patients and to study the basic demographic and pathological characteristics of patients with STUMP or ALM.

STUDY DESIGN

This retrospective study was conducted at Amrita Institute of Medical Sciences. Cases of STUMP and ALM were retrieved from the hospital medical database between June 2014 and December 2022. Demographic parameters, clinical presentations, pathological features and clinical outcomes were analysed. Categorical variables were expressed in numbers and percentages. Normal distribution data were presented as mean while non-normal distribution was expressed as median and range.

RESULTS

Thirty-eight patients were included in the study with a diagnosis of STUMP or ALM in postoperative histology. Seven patients (18.4%) were nulliparous. Myomectomy was performed in 9 (23.6%), while hysterectomy was done in 29 patients (76.3%). Fertility-preserving surgeries were performed on six patients (15.7%). Of these six patients, 4(66.6%) conceived spontaneously and had successful pregnancies. Recurrences were found in 3 patients (7.8%) out of which one had undergone fertility-sparing surgery. All the patients with recurrences had previous history of myomectomies. Morcellation was reportedly done in 2 of these three patients.

CONCLUSION

Good reproductive outcomes have been demonstrated in patients diagnosed with STUMP or ALM and desiring fertility. However, these patients should be kept under follow-up care as they are prone for recurrences. Patients who have undergone morcellation mayhave an increased chance of recurrence.