ecancermedicalscience

Research

Malignant mixed Mullerian tumour of the uterus

4 Apr 2013
SK Rajshekar, B Guruprasad, PN Shakunthala, Praveen Rathod, Uma Devi, UD Bafna

Background: A malignant mixed Mullerian tumour (MMMT) of the uterine corpus is an extremely rare and aggressive malignancy. There are very few studies regarding the outcome of MMMT patients in India. Hence, we conducted the present study to analyse the outcome of MMMTs at our institute.

Objective: To study the clinical profile, prognostic features, and treatment outcome of MMMT with multimodal therapy.

Method: A five-year retrospective study of the MMMT cases diagnosed and treated at our centre was conducted. Twenty patients with pathological proven diagnosis of MMMT treated at our institute from January 2007 to May 2012 were analysed. These patients underwent comprehensive surgical staging followed by adjuvant therapy in the form of chemotherapy alone or chemoradiotherapy. These patients were analysed for event-free survival (EFS), and their outcomes were correlated with histology, therapy, myometrial invasion, and the stage of disease.

Results: A majority of these patients presented with postmenopausal bleeding. Endometrial biopsy was diagnostic in only 20% of the patients. Of the 20 patients who underwent surgery, 18 patients received adjuvant therapy. At median follow-up of 16 months (range 3–30 months), the EFS was 30%. No difference in outcome was noted based on tumour histology (heterologous versus homologous). Concurrent chemoradiation improves local control and may delay recurrence but has shown little survival advantage. 

Conclusion: MMMT is an aggressive tumour of the uterine corpus. A negative endometrial biopsy does not rule out the diagnosis. Poor outcome is noted in patients with advanced-stage disease and myometrial invasion. The optimal adjuvant treatment for this uncommon disease is yet to be established, highlighting the need for larger multicentric studies on MMMTs.

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