An Unusual Site of Metastasis of Malignant Mixed Müllerian Tumor of the Uterus

Muhammad Omar¹, Joel Tjarks², Kashif Abbas Shaikh¹, Kalyan Chakravarthy Potu¹, Uma M Mothapothula^{1, 3} and Maheedhar Gedela^1,

¹Department of Internal Medicine, University of South Dakota Sanford school of Medicine, Sioux Falls, SD, USA

²Department of Pathology, University of South Dakota Sanford school of Medicine, Sioux Falls, SD, USA

³Department of Hospital Medicine, Sanford Clinic, Sioux Falls, SD, USA

Cite this paper:
Muhammad Omar, Joel Tjarks, Kashif Abbas Shaikh, Kalyan Chakravarthy Potu, Uma M Mothapothula and Maheedhar Gedela. An Unusual Site of Metastasis of Malignant Mixed Müllerian Tumor of the Uterus. American Journal of Medical Case Reports. 2016; 4(2):41-43. doi: 10.12691/ajmcr-4-2-2

Abstract

Malignant mixed Müllerian tumors (carcinosarcomas) are biphasic tumors of the uterus and uterine cervix with carcinomatous and sarcomatous components. Malignant mixed Müllerian tumors (MMMT) are rare tumors, accounting for <5% of uterine cancers. They most commonly metastasize to the vagina, pelvic wall, lungs, and ovaries. We report a unique case of MMMT, which developed in a 69-year-old woman after she presented with hip and knee pain. Ultimately, her pain was found to be caused by metastatic tumor deposits in her psoas muscle. The primary tumor was found to be a MMMT of the uterine corpus. We recommend practitioners be aware of this entity and include it and other metastatic lesions in their differential diagnosis in difficult cases of non-resolving pain.

Keywords:
Malignant mixed müLlerian tumor metastasis malignancy uterus

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