Aggressive angiomyxoma occurring in the stomach: A case report and review of literature

Figure 1 On computed tomography scanning, a cystic lesion is observed outside the lesser curvature wall of the gastric antrum, measuring approximately 3. 0 cm × 2.2 cm. A: After contrast enhancement, mild enhancement is noted at the periphery of the lesion, represents the non-contrast computed tomography (CT) scan phase; B: Represents the arterial phase of the CT scan; C: Represents the venous phase of the CT scan. The lesion exhibits thick-walled changes with blurred margins.

Figure 2 Magnetic resonance imaging findings show an abnormal signal focus on the outer gastric wall of the lesser curvature of the antrum. A: The lesion shows a slightly hypointense signal on T1-weighted imaging; B: The lesion appears hyperintense, and on T2-weighted imaging; C: On T1-weighted images, the lesion is approximately 3.0 cm × 2.2 cm in size, with peripheral enhancement after contrast administration; D: On Diffusion-weighted imaging (DWI) sequence, the lesion shows a hyperintense signal at the edge. A: Magnetic resonance imaging (MRI) T1; B: MRI T2; C: MRI T1 with contrast enhancement; D: MRI DWI.

Figure 3 The vertical-axis ultrasound gastroscopy scan shows a uniform echo in the gastric body. A: Low-echo mass-like change approximately 3.0 cm × 2.2 cm in size is observed on the outer wall of the gastric antrum, with uneven internal echoes and visible high-echo structures; B: Lesion size measured by ultrasound.