Cysts at the root of the thigh are benign lesions, commonly found in female patients with round ligament cysts and in male patients with spermatic syringomyelia, and surgical removal is recommended after a clear diagnosis. Cysts are round or oval masses with a soft texture that are not painful when pressed and do not enter the abdominal cavity when returned by force of hand. Cysts need to be differentiated from inguinal or femoral hernias, which are caused by a defect in the abdominal wall or bullae, through which the contents of the abdominal cavity enter the skin. Hernias are particularly prone to entrapment and the contents of the hernia can become necrotic over time. Therefore, when the diagnosis is clear, a tension-free hernia repair is also required.