Pathology Flashcards
Most common tumor of salivary glands
Pleomorphic Adenoma
Mobile, painless, circumscribed mass at angle of jaw made of stromal and epithelial tissue usually in parotid
Pleomorphic Adenoma
Benign cystic tumor with germinal centers, abundant lymphocytes in Parotid
Warthin Tumor
Most common malignant tumor and has mucinous and squamous components. Painless slow growing mass, usually in Parotid. Commonly involves facial nerve
Mucoepidermoid Carcinoma
Inflammation of salivary glands. Most commonly due to an obstructing stone leading to a unilateral S. aureus infection.
Sialoadenitis
Bird’s Beak
Achalasia
Chagas Disease
Achalasia
High LES opening pressure and uncoordinated peristalsis
Achalasia
Transmural, usually distal, esophageal rupture due to violent retching; Sx emergency
Boerhaave Syndrome
Lye ingestion and acid reflux
Esophageal Strictures
Painless bleeding of dilated mubmucosal veins in lower 1/3 of esophagus secondary to portal HTN
Esophageal varices
White pseudomembrane in esophagus
Candida esophagitis
Punched out ulcers in esophagus
HSV-1, esophagitis
Linear Ulcers in esophagus
CMV esophagitis
Nocturnal cough and dyspnea, adult onset asthma, regurgitation upon lying down
GERD
Mucosal lacerations at GE Jx due to severe vomiting, Alcoholic and Bulemics
Mallory-Weiss Syndrome
Esophageal webs, iron deficiency anemia, and glossitis
Plummer-Vinson Syndrome
esophageal smooth muscle atrophy, acid reflux and dysphagia, leads to stricture, Barretts, and aspiration
Sclerodermal esophageal dysmotility (part of CREST)
replacement of nonkeratinized stratified squamous epithelium with intestinal noncilated columnar with goblet cells
Barrett Esophagus
Acquired defect in muscular wall, above upper esophageal sphincter, Dysphagia, Obstruction, Halitosis
Zenker Diverticulum
Causes of SCC of esophagus
alcohol, cigarettes, diverticula, esophageal web, hot liquids
most common worldwide, upper 2/3 esophagus
Causes of Adenocarcinoma of esophagus
Barrett, Cigarettes, Obesity, GERD
More common in the US, in lower 1/3 esophagus
Curling Ulcer
Can be caused by stress, NSAIDs, alcohol, uremia, burns
Decrease in plasma volume and gastric mucosa sloughs off (reason they put patients in ICU on PPIs esp with shock)
Cushing Ulcer
increased ICP, increase vagal stimulation to increase H+ production
Type A Chronic Gastritis
Fundus/body of stomach, from Autoimmune disoders characterized by Ab towards parietal cells, pernicious Anemia, and Achlorhydria
Type B Chronic Gastritis
Antrum of stomach, caused by H. pylori, increase in MALT lymphoma and gastric adenocarcinoma
Tx with Triple Therapy
Gastric hypertrophy with protein loss, parietal cell atrophy, and incresed mucous cells. Rugae of stomach are hypertrophied that they look like a brain
Menetrier Dx
Intestinal Type Stomach Cancer
Associated with H. pylori, dietary nitrosamines (smoked food), tobacco, achlorhydria and chronic gastritis
Lesser curvature, looks like ulcer with raised margins
BLOOD TYPE A
Diffuse Type Stomach Cancer
Signet ring cells, stomach is grossly thickened and leathery (linitis plastica)
Virchow Node
Involvement of left supraclavicular node by metastasis from stomach
Krukenberg Tumor
BL metastases to ovaries from stomach cancer. Abundant mucus, signet rings
Sister Mary Joseph Nodule
Subcutaneous periumbilical metastasis
Pain increases with meals and the patient losses weight
Peptic Gastric Ulcer
Ulcer usually in older patients
Peptic Gastric Ulcer Disease
Ulcer associated with ZE syndrome
Peptic Duodenal Ulcer
100% associated with H. pylori
Peptic Duodenal Ulcer
Hypertrophy of Brunner Glands
Peptic Duodenal Ulcer
Pain decreases with meals, these patients gain weight
Peptic Duodenal Ulcer
Artery most commonly affected with rupture of posterior duodenal ulcer
gastroduodenal artery
Rupture of gastric ulcer
ulcer usually on lesser curvature, bleeding from left gastric artery
Anterior perforation of duodenal ulcer
free air under diaphragm
Bronchospasm, Diarrhea, Flushing of Skin
Carcinoid Syndrome
Damage to small bowel (jejunum and ileum) villi after recent visit to tropics, treated with antibiotics
Tropical Sprue
PAS (+)
Whipple Dx
Gram (+) bacteria affecting the lamina propria of small bowel, synovium of joints, cardiac valves, LN and CNS
T. whipplei
Intolerance of gliadin
Celaic Sprue
HLA-DQ2 and HLA-DQ8
Celiac Sprue
Anti-endomysial
Celiac Sprue
Anti-tissue transglutaminase
Celiac Sprue
Blunting of villi, decreased absorption primarily in distal duodenum and prox ileum
Celiac Sprue
dermatitis herpetiformis
Celiac Sprue
IgA deposition at tips of dermal papillae, resolves with gluten-free diet
Celiac Sprue - Dermatitis herpetiformis
Most common lactase deficiency
Disaccharidase deficiency
Osmotic diarrhea
Lactose intolerance
Inability to generate chylomicrons therefore decrease secretion of cholesterol, VLDL into blood
Abetalipoproteinemia
Fat Accumulation in enterocytes
Abetalipoproteinemia
decrease in both ApoB48 and ApoB100
Abetalipoproteinemia
Early childhood failure to thrive, steatorrhea, acanthocytosis, atazia and night blindness
Abetalipoproteinemia
Increase in neutral fat in stool
Pancreatic Insufficiency
D-xylose absorption test
normal urinary excretion = Pancreatic Insufficiency
decrease excretion = intestinal mucosa defects or bacterial overgrowth
Enteropathy Associated T-cell Lymphoma
associated with Celiac Sprue
Positive Chromogranin
Carcinoid Tumor
5-HIAA in urine
Carcinoid Tumor
Skip lesions, rectal sparing
Crohn Disease
Disease that starts at rectum and continually moves its way up the GI tract
Ulcerative Colitis
Transmural inflammation of GI tract
Crohn Disease
string sign
Crohn Disease
Cobble Stone Mucosa
Crohn Disease
non-caseating granuloma and lymphoid aggregates
Crohn Disease
Associated with Primary Sclerosing Cholangitis
Ulcerative Colitis
Tx of Crohns
Corticosteroids, azathrioprine, methotrexate, infliximab, adalimumab
Tx of Ulcerative Colitis
ASA preparations (sulfasalazine), 6-mercaptopurine, infliximab, colectomy
Lead Pipe
Ulcerative Colitis
Crypt Abscesses and ulcers
Ulcerative Colitis
Th1 mediated
Crohn Dx
Th2 mediated
Ulcerative Colitis
Complications of Ulcerative Colitis
sclerosis cholangitis, toxic megacolon, colorectal carcinoma (10yrs with dx), malnutrition
Pain improves with defecation, Change in stool frequency, change in appearance of stool
IBS
Adult appendicitis
obstruction by fecalith
Child Appendicitis
Lymphoid Hyperplasia
Rovsing Sign
Apendicitis
All 3 gut wall layers outpouch
True diverticulum
Only mucosa and submucosa outpouch
False or pseudodiverticulum
1 area of diverticulum
Sigmoid colon
Many false diverticula of the colon caused by increased intraluminal pressure and focal weakness of colon wall
Diverticulosis
LLQ pain, fever, leukocytosis
Diverticulitis
May cause colovesical fistula
Diverticulitis
“left-sided” appendicitis
DIverticulitis
Killian Triangle Herniation
Zenker diverticulum, between thyropharyngeal and cricopharyngeal parts of inferior pharyngeal constrictor
Melena, RLQ pain, intusseception, volvulus, or obstruction near terminal ileum
Meckel Diverticulum
the 5 2’s
Meckel Diverticulum,
2inches long, 2 feet from ileocecal valve, 2% of population, commonly presents in first 2 years of life, 2 types of epithelia (gastric/pancreatic)
Pertechnetate study for uptake by gastric ectopic mucosa
How Meckel is diagnosed
Intermittent abdominal pain with “currant jelly” stools
Intussusception
Telescoping of a bowel segment
Intussesception
Twisting of bowel around its mesentery
Volvulus
Sigmoid Volvulus
Old people
Midgut/Cecum Volvulus
Young peopple
Failure of neural crest cell migration in colon, assoc with RET mutation
Hirschsprung
Fibrous band of scar tissue; commonly forms after surgery
Adhesion
Tortuous dilation of vessels that can lead to hematochezia
Angiodysplasia
Double bubble on X ray
Duodenal Atresia
early bilous vomiting with proximal stomach distention
duodenal atresia (assoc with Downs)
Failure of small bowel to recanalize
Duodenal Atresia
Intestinal hypomotility without obstruction
Ileus
Associated with abdominal surgeries, opiates, hypokalemia, and sepsis
Ileus
Pain after eating causing weightloss, commonly occurs at splenic flexure and distal colon (reduced blood flow)
Ischemic Colitis
Atherosclerosis of SMA
Ischemic Colitis
Cystic Fibrosis, meconium plug that obstructs the intestine preventing stool passage
Meconium Ileus
Necrosis of intestinal mucosa and possible perforation
Necrotizing enterocolitis
Hereditary Hemorrhagic Telangiectasias
Freq nose bleeds, GI bleeds from thinned walled BVs
Most common non-neoplastic polyp in colon
Hyperplastic Polyp
villous polyp
More likely to be cancerous
APC gene mutation, kRAS mutation, p53
Adenomatous Polyp becoming cancer
Multiple Juvenile Polyps in GI tract
Juvenile polyposis syndrome
Autosomal Dominant Syndrome, mult. nonmalignant hamartomas throughout GI tract, hyperpigmented mouth, lips, hands and genitalia
Peutz-Jeghers Syndrome
TOO MUCH PATH
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