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An ovarian sex cord tumor with annular tubules (SCTAT) is a tumor that grows from cells in the ovaries known as sex cord cells. As these cells grow, they form tube-like shapes in the tumor.[7911] SCTATs can develop in one or both ovaries, and may cause symptoms such as puberty at an exceptionally young age (precocious puberty), irregular menstrual cycles, or post-menopausal bleeding.[7911][7912] Most ovarian SCTATs are benign.[7911][7912] However, because there is a chance that an SCTAT may be malignant, treatment may include surgery to remove the tumor.[7912]
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