text: Yo, check it out, this meta-analysis
  Comparing prognosis, patients with liver metastases
  Colorectal, undergoin' liver resection
  With or without radiofrequency ablation, pay attention
  
  We did a systematic search, medical subject headings
  Truncated word searches, findin' studies spreadin'
  Comparin' the outcomes, postoperative survival
  Overall and disease-free, let's dive in the revival
  
  Pooled hazard ratios, with 95 percent confidence
  Calculatin' the stats, no room for pretense
  Ten studies, 3900 patients enrolled in
  Meta-analysis, let the results begin
  
  Patients treated by LR, livin' the better life
  Higher overall survival, cuttin' through the strife
  HR of 2.07, 95 percent CI, 1.82 to 2.37
  Livin' longer, that's the heavenly blessin'
  
  DFS, disease-free survival, also on their side
  HR of 1.91, 95 percent CI, 1.70 to 2.15, ride or die
  But hold up, five studies had adjusted HR
  Let's see how things change, let's take it far
  
  LR + RFA group, shorter overall survival
  HR of 1.66, 95 percent CI, 1.18 to 2.32, no denial
  But hey, DFS remains comparable
  HR of 1.36, 95 percent CI, 0.99 to 1.88, that's the label
  
  Our meta-analysis, shoutin' it loud and clear
  Colorectal liver metastases, LR's the one to cheer
  Better long-term outcomes, no doubt in sight
  LR + RFA, comparable DFS with LR, alright
  
  So there you have it, the rap rendition's complete
  Same content, different style, bringin' the heat
  Meta-analysis droppin' knowledge, breakin' it down
  Colorectal liver metastases, we run this town!