¹⁸ F-Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography-Positive Lymph Node Endometriosis Masquerading as Lymph Node Metastasis of a Malignant Tumor

Figure 3

Microscopic view of the internal iliac lymph node indicating the replacement of the normal lymph node central structure with endometriotic tissues, with a residual capsule and lymphocytes at the peripheral area. The open arrow indicates an endometrium-like duct, the closed arrow indicates peripheral lymphocytes, and the area surrounded by a broken line indicates the capsule of the lymph node.