Esophageal lymphangioma: A case report and review of literature

Figure 1 Diagnostic features of esophageal lymphangioma. A: Endoscopic examination reveals a hemispherical mucosal elevation measuring approximately 1.5 cm × 0.8 cm in the lower segment of the esophagus, with a smooth surface and color consistent with the surrounding mucosa; B: Endoscopic ultrasound indicates that the lesion is located in the submucosal layer, presenting as a mixed hypoechoic mass with heterogeneous internal structure, exhibiting small septal changes and no significant blood flow signal; C: Chest computed tomography suggests localized wall thickening in the lower segment of the esophagus; D: Histological examination reveals numerous dilated tubular structures within the lamina propria; E and F: Immunohistochemical analysis indicated cluster of differentiation 31 positivity and partial positivity for D2-40, confirming the diagnosis of esophageal lymphangioma.