text: Yo, check it out, listen up, here we go,
  Got a 41-year-old man with ileitis terminalis flow,
  He went under the knife for that chronic abdominal pain,
  But the histological investigation revealed Crohn's disease, insane.
  
  Now this ain't your regular Crohn's, nah, it's rare,
  Muscle involvement joined the party, it's a double dare,
  Progressive muscle pain and tenderness, it's a fight,
  Before they even found out about the intestinal plight.
  
  He was all about them calf muscles, that's where it hurt,
  Electromyography showed normal, no need to alert,
  Serum creatinine-kinase activity, it didn't rise,
  But the histological findings were a surprise.
  
  Mononuclear cell infiltrations, they were slight,
  In the perimysial connective tissue, that's right,
  Sometimes they looked like granuloma formations, oh,
  Mild mitochondrial changes, that's what we know.
  
  Non-steroid anti-inflammatory? Nah, didn't work,
  Steroid medication? Nope, still left him in a smirk,
  These complaints, they persisted, no relief in sight,
  But we keep on searching, trying to make it right.