Fibrous tissue tumors are abnormal growths that develop in the fibrous connective tissue, which supports and connects various structures in the body. These tumors can be benign, meaning they are non-cancerous, or malignant, which indicates a cancerous nature. Common types include desmoid tumors and fibromas, which can occur in various locations, such as the skin, muscles, or organs. Diagnosis typically involves imaging tests like MRI or CT scans, along with a biopsy to determine the tumor's nature. Treatment options may include surgery, radiation therapy, or medication, depending on the tumor's type, size, and location. Regular monitoring is essential for managing these tumors effectively.