8yo female child detected one mass at left buttock that was
in slow growth for 3 month and getting  pain now.
Ultrasound of this mass which is  located at gluteus medius
muscle of left buttock.
US 1: Hypoechoic mass, size of 5 cm, well bordered.
US 2 : CDI, hypervascular color mapping looked like a ring.
US 3: PWD, RI low of  the artery supply. 
MRI  with gado of the mass.
MRI 1, MRI 2, MRI 3 of  this mass  showed  erosion of the
iliac bone  and  MRI 4 revealed a small mass intraspinal canal.
Open biopsy of  this tumor with  the specimen
 looked like  brain tissue and microscopic result is ASPS  (alveolar
soft part sarcoma).

































