Rapidly growing extensive polypoid endometriosis after gonadotropin-releasing hormone agonist discontinuation: A case report

Figure 1 Ultrasound and magnetic resonance imaging images demonstrate changes in lesions before and after two cycles of gonadotropin-releasing hormone agonist treatment. A: Before the start of treatment, the largest lesion measured 7.7 cm in diameter and displayed some hypoechoic regions within (ultrasound image) (orange arrow); B The lesion appears as slightly hyperintense on T2-weighted imaging in the coronal plane (magnetic resonance imaging) (orange arrow); C and D: In the sagittal and axial enhanced scans, uneven enhancement is observed (magnetic resonance imaging) (orange arrow); E: The lesion exhibits a slight increase in the diffusion-weighted imaging signal (magnetic resonance imaging) (orange arrow); F: After two courses of gonadotropin-releasing hormone agonist treatment, the maximum diameter of the lesion increased to 9 cm, with a few hypoechoic areas visible inside (ultrasound image) (orange arrow).