Tiffany Graham
Jul 24, 20191 min read
2,994
Food travels from the small intestines through the colon as follows:
1. Cecum
2. Ascending (right) colon
3. Transverse colon
4. Descending (left) colon
5. Sigmoid colon
6. Rectum
7. Anus (skin)
This post contains high yield findings to help identify your location in the GIT. Continue reading...
Congenital Anomalies
Duplication
Malrotation
Omphalocele
Gastroschisis
Meckel Diverticulum
Congenital Aganglionic Megacolon (Hirschsprung Disease)
Diverticular Disease
Intestinal Obstruction (benign etiology)
Hernias
Adhesions
Intussusception
Volvulus
Enzymatic deficiencies/Autoimmune diseases
Celiac Disease
Lactase Deficiency
Abetalipoproteinemia
Ischemic Bowel Disease
Angiodysplasia
Hemorrhoids
Diarrhea Etiologies
Infectious organisms
Type (Secretory, Osmotic, Exudative)
Malabsorption
Enzyme deficiencies
Autoimmune inflammation
Antibiotic-associated injury
Inflammatory Conditions
Necrotizing Enterocolitis
Collagenous & Lymphocytic Colitis
Graft vs. Host disease (Transplant)
Drug-induced injury (NSAIDs)
Radiation enterocolitis
Neutropenic colitis (Typhlitis)
Diversion Colitis
Colitis Cystica Profunda (Solitary Rectal Ulcer Syndrome)
Inflammatory Bowel Disease
Idiopathic Inflammatory Bowel Disease (IBD)
Irritable bowel syndrome
Ischemic colitis
Celiac Disease
Crohn Disease
Ulcerative Colitis
Infectious Organisms
Viruses
Adenovirus
Astrovirus
Calicivirus (Norwalk)
HIV
Rotavirus
Bacteria
Toxigenic (Vibrio cholerae, E. coli)
Enteroinvasive (Shigella, Salmonella, Yersinia, Campylobacter, Enteroinvasive E. coli)
Antibiotic-associated/Pseudomembranous Colitis- C. difficile)
Tropical (Postinfectious) Sprue
Whipple Disease (Tropheryma whippelii)
Dysentery
Parasites
Nematodes (Roundworms)
Ascaris
Strongyloides
Hookworms
Pinworms (Enterbius vermicularis)
Whipworms (Trichuris Trichura)
Cestodes
Protozoa
Entamoeba histolytica
Giardia Lamblia
Microsporidia
Cryptosporidia
Isospora belli
Acute (Active) Colitis Pattern
Infection
Medication
Inflammatory Bowel Disease
Focal Active Colitis Pattern
Acute Self-limited Colitis
Infection
Medication
Chemicals or Irritants
Inflammatory Bowel Disease
Ischemic Colitis
Irritable Bowel Syndrome
Antibiotic-associated Colitis
Nonsteroidal Anti-inflammatory Drugs
Bowel Preparatory Artifact
Chronic (Inactive) Colitis Pattern
Inflammatory Bowel Disease
Diverticular Disease
Diversion-associated Colitis
Syphilitic and Lymphogranuloma Venereum Proctocolitis
Cord Colitis Syndrome
Ipilimumab Colitis
Resins
Lymphocytic Pattern
Lymphocytic Colitis
Collagenous Colitis
Medications
Viral Infection
Eosinophilia Pattern
Idiopathic Eosinophilic Colitis
Inflammatory Bowel Disease
Allergy
Medications
Infection
Parasite
Collagen Vascular Disorder and Vasculitis
Granulomatous Pattern
Inflammatory Bowel Disease
Nonspecific Mucosal Injury
Diverticular Disease
Infections
Medication
Sarcoidosis
Vascular Injury
Pneumatosis Cystoides Intestinalis
Autoimmune Diseases
Cord Colitis Syndrome
Lymphoproliferative Disorders
Ischemic Colitis Pattern
Ischemia
Infection
Medication
Pseudomembranous Pattern
Ischemia
Clostridium difficile Colitis and Other Infections
Pigments and Extras
Melanosis Coli
Tattoo Pigment
Air Artifact
Pneumatosis Cystoides Intestinalis
Muciphages
Resins
Near Misses
Endometriosis
Benign Signet Ring Cell Change
Pulse Granulomata
Apoptotic Colopathy
Spirochetosis
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Click on a topic below to learn more)
The Basics
Normal Histology
Benign Conditions
Congenital Anomalies
Duplication
Malrotation
Omphalocele
Gastroschisis
Meckel Diverticulum
Congenital Aganglionic Megacolon (Hirschsprung Disease)
Inflammatory Conditions
Necrotizing Enterocolitis
Collagenous & Lymphocytic Colitis
Graft vs. Host disease (Transplant)
Drug-induced injury (NSAIDs)
Radiation enterocolitis
Neutropenic colitis (Typhlitis)
Diversion Colitis
Colitis Cystica Profunda (Solitary Rectal Ulcer Syndrome)
Inflammatory Bowel Disease
Idiopathic Inflammatory Bowel Disease (IBD)
Irritable bowel syndrome
Ischemic colitis
Celiac Disease
Crohn Disease
Ulcerative Colitis
Diarrhea Etiologies
Mechanisms of action
Infectious organisms
Type (Secretory, Osmotic, Exudative)
Malabsorption
Enzyme deficiencies
Autoimmune inflammation
Antibiotic-associated injury
Common Infectious Organisms known to cause diarrhea
Viruses
Adenovirus
Astrovirus
Calicivirus (Norwalk)
HIV
Rotavirus
Bacteria
Toxigenic (Vibrio cholerae, E. coli)
Enteroinvasive (Shigella, Salmonella, Yersinia, Campylobacter, Enteroinvasive E. coli)
Antibiotic-associated/Pseudomembranous Colitis- C. difficile)
Tropical (Postinfectious) Sprue
Whipple Disease (Tropheryma whippelii)
Dysentery
Parasites
Nematodes (Roundworms)
Ascaris
Strongyloides
Hookworms
Pinworms (Enterbius vermicularis)
Whipworms (Trichuris Trichura)
Cestodes
Protozoa
Entamoeba histolytica
Giardia Lamblia
Microsporidia
Cryptosporidia
Isospora belli
Diverticular Disease
Intestinal Obstruction (benign etiology)
Hernias
Adhesions
Intussusception
Volvulus
Enzymatic deficiencies/Autoimmune diseases
Celiac Disease
Lactase Deficiency
Abetalipoproteinemia
Ischemic Bowel Disease
Angiodysplasia
Hemorrhoids
Neoplastic Conditions
Small Intestine Tumors
Non-neoplastic (benign) polyps
Neoplastic Epithelial Lesions
Mesenchymal Lesions
Lymphoma
Essentials for [future] Pathologists
How to gross a benign resection specimen
How to gross a tumor resection specimen
How to grade & stage cancer
How to sign-out the case
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