Location No. Patients
Gluteus maximus muscle 29
Deep to gluteus maximus with extension through the greater sciatic notch 4
Gluteus maximus involvement with extension into the perineum 4
Subcutaneous 9
Gluteus medius and minimus 3
Gluteus minimus 1
Extension into pelvis through pelvic floor 2
Piriformis and obturator muscle involvement along with gluteus maximus 1
Extension between ischial tuberosity and femur 2
All the layers 3
Not recorded 15
Table 2: Location of buttock soft tissue sarcomas [8].