👉 Stratiomyoma, also known as stratosphere tumor, is a type of malignant mesenchymal tumour that arises from the outermost layer of cells in the organ wall, typically the gastrointestinal tract. It can be caused by a variety of factors such as genetic mutations or exposure to certain substances. Stratiomyomas are often asymptomatic and are generally small tumors with no symptoms. They occur more frequently in women than men due to hormonal changes during pregnancy.