Revision of Metal on Metal Total Hip Replacement due to Pseudotumor formation 39 years old gentleman is a follow up case of right total hip replacement (Large Diameter head Metal on Metal) done 5 years back for healed tuberculosis of hip. Now patient has presented with complains of pain around right hip on walking. Fresh x-rays showed radiolysis around acetabulum with no loosening of femoral stem. MRI of pelvis showed pseudotumor formation around right hip. He has undergone revision Right Total Hip Replacement using uncemented acetabulum and femur (Metal on Poly). Intraoperatively there was a change in the consistency of muscles around the hip joint (pseudotumor), this mass was excised in toto. Now the patient has been discharged and is now comfortable and pain free. This rare condition of pseudotumor formation with Metal on Metal Total Hip Replacement(THR) has been successfully treated.