| Medical Terms |
| ABS | Artificial bowel sphincter |
| AFAP | Attenuated variant of familial adenomatous polyposis |
| AIN | Anal intraepithelial neoplasia |
| APR | Abdominoperineal resection |
| ARDS | Acute respiratory distress syndrome |
| ASA | Context-dependent: acetylsalicylic acid (medication) |
| ASA | Context-dependent: American Society of Anesthesiologists
(→ risk classification) |
| ASCA | Anti-Saccharomyces cerevisiae antibodies (Crohn
disease marker) |
| ASCUS | Atypical squamous cells of uncertain significance |
| ATZ | Anal transitional zone |
| BE | Barium enema |
| BRBPR | Bright red blood per rectum |
| CBC | Complete blood count |
| CEA | Carcinoembryonic antigen |
| CHRPE | Congenital hypertrophy of the retinal pigment epithelium |
| CMV | Cytomegalovirus |
| CT | Computed tomography |
| DALM | Dysplasia-associated lesion or mass (in ulcerative colitis) |
| DIC | Disseminated intravascular coagulation |
| DVT | Deep vein thrombosis |
| EAS | External anal sphincter |
| EGD | Esophagogastroduodenoscopy |
| EMG | Electromyogram |
| ERUS | Endorectal ultrasound |
| FAP | Familial adenomatous polyposis |
| FIQL | Fecal incontinence quality of life score |
| 5-FU | 5-Fluorouracil |
| GERD | Gastroesophageal reflux disease |
| GI | Gastrointestinal |
| GIST | Gastrointestinal stromal tumor |
| GYN | Gynecologic |
| HAART | Highly active antiretroviral therapy |
| HIV | Human immunodeficiency virus |
| HNPCC | Hereditary nonpolyposis colon cancer (Lynch I/II) |
| H&P | History and physical (examination) |
| HPF | High-power field (microscopy) |
| HPV | Human papillomavirus |
| HSIL | High-grade squamous intraepithelial lesions |
| HSV | Herpes simplex virus |
| IAS | Internal anal sphincter |
| IBD | Inflammatory bowel disease (Crohn disease, ulcerative colitis, indeterminate colitis) |
| IBS | Irritable bowel syndrome |
| ICU | Intensive care unit |
| I&D | Incision and drainage (abscess) |
| IMA | Inferior mesenteric artery |
| IMRT | Intensity-modulated radiation therapy |
| IMV | Inferior mesenteric vein |
| IPAA | Ileal J-pouch anal anastomosis |
| IPS | Irritable pouch syndrome |
| IRA | Ileorectal anastomosis |
| LAR | Low anterior resection |
| LBO | Large bowel obstruction |
| LGV | Lymphogranuloma venereum |
| LIS | Lateral internal sphincterotomy |
| LLQ | Left lower quadrant |
| LSIL | Low-grade squamous intraepithelial lesions |
| LUQ | Left upper quadrant |
| LV | Leucovorin |
| MACE | Malone antegrade colonic enema |
| MAP | MYH-associated polyposis |
| MELD | Model for end-stage liver disease |
| MRCP | Magnetic resonance cholangiopancreatography |
| MRI | Magnetic resonance imaging |
| MRSA | Methicillin-resistant Staphylococcus aureus |
| MSI | Microsatellite instability |
| MSM | Men who have sex with men |
| MSS | Microsatellite stability |
| NGT | Nasogastric tube |
| NPO | Nothing by mouth (nulla per os) |
| NSAID | Nonsteroidal anti-inflammatory drug |
| O&P | Ova and parasites |
| OR | Operating room |
| pANCA | Perinuclear antineutrophil cytoplasmic antibodies (marker
for ulcerative colitis) |
| PC/IPAA | Proctocolectomy/ileal J-pouch anal anastomosis |
| PE | Pulmonary embolism |
| PET | Positron emission tomography |
| PET-CT | Positron emission tomography combined with CT |
| PID | Pelvic inflammatory disease |
| POD | Postoperative day |
| PPD | Purified protein derivative (tuberculosis test) |
| PPH | Procedure for prolapse and hemorrhoids |
| PSARP | Posterior sagittal anorectoplasty |
| PSC | Primary sclerosing cholangitis |
| PT | Prothrombin time |
| PTT | Partial thromboplastin time |
| RAIR | Rectoanal inhibitory reflex |
| RBC | Red blood cell |
| RLQ | Right lower quadrant |
| RUQ | Right upper quadrant |
| SBO | Small bowel obstruction |
| SCC | Squamous cell cancer |
| SCFA | Short-chain fatty acids |
| SMA | Superior mesenteric artery |
| SMV | Superior mesenteric vein |
| SRUS | Solitary rectal ulcer syndrome |
| STD | Sexually transmitted disease |
| TEM | Transanal endoscopic microsurgery |
| TIPS | Transjugular intrahepatic portosystemic shunt |
| TME | Total mesorectal excision |
| TNM | Tumor nodes metastases (tumor staging system) |
| TPN | Total parenteral nutrition |
| UC | Ulcerative colitis |
| VAC | Vacuum-assisted closure |
| WBC | White blood cells |
| XRT | Chemoradiation |
| Oncological Outcome Parameters |
| DFS | Disease-free survival |
| NED | No evidence of disease (cancer follow-up) |
| ORR | Objective response rate (sum of complete and partial response) |
| OS | Overall survival | ...