Case 1. 11-Year-Old Female Born with Anorectal Malformation Diagnosed as a "Cloaca"
Mauricio Lozoya, M.D., and Emilio Fernandez, M.D., Hospital Infantil de Mexico Federico Gomez, Mexico City, Mexico
Case 2. 3-Month-Old Male Patient with Anorectal Malformation Without Fistula
Maria Zornoza, M.D., and Alejandro Ruiz, M.D., Centro Colorrectal Para Ninos, Mexico City, Mexico
Case 3. 13-Year-Old Female Patient with Anorectal Malformation with Recto-vestibular Fistula
Karla Santos-Jasso, M.D., National Institute of Pediatrics, Mexico City, Mexico
Case 4. 39-Day-Old Female Patient with Rectal Biopsy Diagnosis of Hirschsprung Disease
Alberto Peña, M.D., Director, International Center for Colorectal and Urogenital Care, Children's Hospital Colorado, Aurora, CO US