The cylindrical shape of the groin may be the result of enlarged lymph nodes, phlebitis of the lower extremities, and other diseases, and for male patients also need to consider abdominal wall hernia. 1. Enlarged lymph nodes: enlarged lymph nodes are mainly due to bacterial, viral and other pathogenic infections, tumors, reactive hyperplasia or cell proliferation metabolic abnormalities and other factors. Patients will have enlarged lymph nodes, fever, pain, etc. If the lymph nodes are enlarged in the groin, it will lead to the phenomenon of something in the shape of a groin cylinder. 2. Phlebitis of the lower extremities: Phlebitis of the lower extremities is caused by antibiotics or mechanical injury, the patient will have local skin redness, swelling, pressure pain, etc., which will also lead to the emergence of the inguinal cylindrical shape of the patient. 3. Abdominal wall hernia: Abdominal wall hernia is mainly caused by factors such as reduced strength of the abdominal wall or increased intra-abdominal pressure. The main symptoms of patients with abdominal wall hernia are bulging inguinal area, dull pain, lumps, etc., which can lead to the manifestation of inguinal cylindrical shape of the patient. Patients with symptoms of inguinal cylindrical shaped things should seek medical attention in time and follow the doctor’s instructions for treatment.