text: Yo, check it out, listen up, I gotta story to tell,
  'Bout a rare condition that we know so well,
  Hemangiopericytoma, it's a neoplasm, you see,
  Proliferating capillary pericytes, that's the key.
  
  Unpredictable malignancy, it's hard to predict,
  Mostly hits folks in their fifth or sixth decade, that's legit,
  Diagnosis based on histological aspect, that's the fact,
  Childhood cases are rare, it's a rare impact.
  
  For adults and kids, surgery is the way,
  Curative surgery predicts survival, okay?
  Chemotherapy, though, it's not well placed,
  In the treatment of HPC, it's not embraced.
  
  Now let me tell you 'bout this incredible case,
  Metastatic HPC in a 13-year-old boy's space,
  In the thigh it resided, causing quite a fright,
  But neoadjuvant chemo brought it under control, alright!
  
  No radiation or surgery that would mutilate,
  Local control achieved, that's what we celebrate,
  The child's alive and well, no need to despair,
  Eight years of follow-up, treatment's been fair.