Gastroenterology

Mouth

Aphthous ulcer of Crohn’s disease. Note normal surrounding mucosa.

Apthous Ulcer

Photo courtesy of Dr. G. Kandel.

Esophagus

Columnar epithelium extends up into normal squamous epithelium in one quadrant.

Barretts Esophagus

All photos courtesy of Dr. G. Kandel.

Stomach

Peptic Ulcer Disease	Bleeding Ulcer
	Blood spurting from a small ulcer.

Blood spurting from a small ulcer.

Bleeding Ulcer

All photos courtesy of Dr. G. Kandel.

Liver Disease

Spider Nevi	Palmar Erythema

Leukonychia	Ascites

Caput Medusae	Clubbing
Please see image at: https://www.healthline.com/health/caput-medusae	Please see image at: https://en.wikipedia.org/wiki/Nail_clubbing
Dupuytren’s Contracture	Scleral Icterus
Please see image at: https://floridahandcenter.com/dupuytrens-contracture/	Please see image at: https://www.thesilverfridge.com/medical-trivial-repository/2020/1/3/gilberts
Parotid Enlargement	Liver Cirrhosis
Please see image at: https://www.sciencephoto.com/media/c0111729/view	Please see image at: https://my.clevelandclinic.org/-/scassets/images/org/health/articles/15572-cirrhosis?io=transform%3afit%2cwidth%3a780

Colon

Pseudomembranous Colitis	Ulcerative Colitis
	Diffuse, erythema, friability and loss of normal vascular pattern.
Colonic Polyp	Angiodysplasia (“Watermelon Stomach”)
Removal with snare.	Usually presents as anemia and can be treated by endoscopic coagulation