text: Yo, check it out, I got a story to tell,
  'Bout an 11-year-old child, sickle cell anemia as well.
  Multicentric bilateral renal cell carcinomas on display,
  With a massive renal vascular leiomyoma, I gotta say.
  
  This kid had episodes of hematuria, it was intense,
  Abdominal sonography and CT made sense.
  They found neoplasms in the kidneys, left and right,
  Thought it was bilateral Wilms' tumor, quite a fight.
  
  A biopsy of the right kidney's lower pole was done,
  Revealing renal cell carcinoma, it wasn't fun.
  So they went ahead with bilateral renal angiography,
  Total nephrectomy on the right, partial on the left, you see.
  
  Pathology studies showed multicentric action,
  Renal cell carcinomas, clear, granular, oncocytic satisfaction.
  And in the right kidney, something else came to light,
  A simultaneous large vascular leiomyoma, out of sight.
  
  The smooth muscle nature of the leiomyoma they found,
  Light microscopy, immunohistology, and electron microscopy crowned.
  But yo, it's tough to diagnose, the difficulties arise,
  Distinguishing these tumors from others, it's no surprise.