A myxoid tumor is a connective tissue tumor with a "myxoid" background, composed of clear, mucoid substance. This tumoral phenotype is shared by many tumoral entities: * Myxomas * Atrial myxoma * Odontogenic myxoma * Cutaneous myxoma * Intramuscular myxoma * Myxoid hamartoma * Aggressive angiomyxoma * Myxoid leiomyoma * Chondromyxoid fibroma * Myxoid neurofibroma * Nerve sheath myxoma (neurothekeoma) * Myxolipoma * Angiomyofibroblastoma * Myxoid leiomyosarcoma * Myxoid liposarcoma * Lipoblastoma * Myxofibrosarcoma * Myxoid cortical adenoma * Pleomorphic adenoma * Undifferentiated embryonal sarcoma * Plexiform angiomyxoid myofibroblastic tumor * Myxoid plexiform fibrohistiocytic tumor * Angiomyxolipoma (vascular myxolipoma) * Parachordoma *