Fig. 4From: Axillary lymphangioma that developed following COVID-19 vaccination: a case reportPathological findings. Resected specimen of the axilla cystic tumor (a). In the cystic region, the inner surface was lined with flattened endothelial cells (b; hematoxylin–eosin staining). The endothelial cells were positive for D2-40 by immunostaining and determined to be lymphatic vessels (c and d)Back to article page