Grynfeltt–Lesshaft hernia

Herniation of abdominal contents

The superior and inferior lumbar triangles with a cross section at the level of the superior lumbar triangle

Grynfeltt–Lesshaft hernia is a herniation of abdominal contents through the back, specifically through the superior lumbar triangle, which is defined by the quadratus lumborum muscle, twelfth rib, and internal oblique muscle.

History

Grynfeltt described a hernia through the superior lumbar triangle in 1866 (Grynfeltt, 1866). In 1870, Lesshaft independently reported a similar case (Lesshaft, 1870).

References

Grynfeltt, J.: La Hernie Lombaire. Montpellier Med., 16:329, 1866.
Lesshaft, P.: Die Lumbalgegend in Anat. Chirurgischer Hinsicht. Arch. f. Anat. u. Physiol. u. Wissensch., Med. Leipzig, 37:264, 1870.

Diseases of the human digestive system

Upper GI tract

Esophagus	Esophagitis Candidal Eosinophilic Herpetiform Rupture Boerhaave syndrome Mallory–Weiss syndrome Zenker's diverticulum Barrett's esophagus Esophageal motility disorder Nutcracker esophagus Achalasia Esophagogastric junction outflow obstruction Diffuse esophageal spasm Gastroesophageal reflux disease (GERD) Laryngopharyngeal reflux (LPR) Esophageal stricture Inlet patch Megaesophagus Esophageal intramural pseudodiverticulosis Acute esophageal necrosis
Stomach	Gastritis Atrophic Ménétrier's disease Gastroenteritis Peptic (gastric) ulcer Cushing ulcer Dieulafoy's lesion Dyspepsia Functional dyspepsia Pyloric stenosis Achlorhydria Gastroparesis Gastroptosis Portal hypertensive gastropathy Gastric antral vascular ectasia Gastric dumping syndrome Gastric volvulus Buried bumper syndrome Gastrinoma Zollinger–Ellison syndrome

Esophagus

Esophagitis
- Candidal
- Eosinophilic
- Herpetiform
Rupture
- Boerhaave syndrome
- Mallory–Weiss syndrome
Zenker's diverticulum
Barrett's esophagus
Esophageal motility disorder
- Nutcracker esophagus
- Achalasia
- Esophagogastric junction outflow obstruction
- Diffuse esophageal spasm
- Gastroesophageal reflux disease (GERD)
Laryngopharyngeal reflux (LPR)
Esophageal stricture
Inlet patch
Megaesophagus
Esophageal intramural pseudodiverticulosis
Acute esophageal necrosis

Stomach

Lower GI tract
Enteropathy

Small intestine (Duodenum/Jejunum/Ileum)	Enteritis Duodenitis Jejunitis Ileitis Peptic (duodenal) ulcer Curling's ulcer Malabsorption: Coeliac Tropical sprue Blind loop syndrome Small intestinal bacterial overgrowth Whipple's Short bowel syndrome Steatorrhea Milroy disease Bile acid malabsorption
Large intestine (Appendix/Colon)	Appendicitis Colitis Pseudomembranous Ulcerative Ischemic Microscopic Collagenous Lymphocytic Dysentery Functional colonic disease IBS Intestinal pseudoobstruction / Ogilvie syndrome Megacolon / Toxic megacolon Diverticulitis/Diverticulosis/SCAD
Large and/or small	Enterocolitis Necrotizing Gastroenterocolitis IBD Crohn's disease Vascular: Abdominal angina Mesenteric ischemia Angiodysplasia Bowel obstruction: Ileus Intussusception Volvulus Fecal impaction Constipation Diarrhea Infectious Intestinal adhesions
Rectum	Proctitis Radiation proctitis Proctalgia fugax Rectal prolapse Anismus Solitary rectal ulcer syndrome
Anal canal	Anal fissure/Anal fistula Anal abscess Hemorrhoid Anal dysplasia Pruritus ani

GI bleeding

Accessory

Liver	Hepatitis Viral hepatitis Autoimmune hepatitis Alcoholic hepatitis Cirrhosis PBC Fatty liver MASLD Vascular Budd–Chiari syndrome Hepatic veno-occlusive disease Portal hypertension Nutmeg liver Alcoholic liver disease Liver failure Hepatic encephalopathy Acute liver failure Liver abscess Pyogenic Amoebic Hepatorenal syndrome Peliosis hepatis Metabolic disorders Wilson's disease Hemochromatosis
Gallbladder	Cholecystitis Gallstone / Cholelithiasis Cholesterolosis Adenomyomatosis Postcholecystectomy syndrome Porcelain gallbladder
Bile duct/ Other biliary tree	Cholangitis Primary sclerosing cholangitis Secondary sclerosing cholangitis Ascending Cholestasis/Mirizzi's syndrome Biliary fistula Haemobilia Common bile duct Choledocholithiasis Biliary dyskinesia Sphincter of Oddi dysfunction
Pancreatic	Pancreatitis Acute Chronic Hereditary Pancreatic abscess Pancreatic pseudocyst Exocrine pancreatic insufficiency Pancreatic fistula

Other

Hernia	Diaphragmatic Congenital Hiatus Inguinal Indirect Direct Umbilical Femoral Obturator Spigelian Lumbar Petit's Grynfeltt–Lesshaft Undefined location Incisional Internal hernia Richter's
Peritoneal	Peritonitis Spontaneous bacterial peritonitis Hemoperitoneum Pneumoperitoneum