5. Gastric Cancer, Zollinger-Ellison Syndrome, & Pyloric Stenosis Flashcards
What is the 5 year survival rate for localized stomach cancer?
67%
How does gastric cancer spread?
Direct extension through the GASTRIC WALL and LYMPHATICS
What are the most common type of gastric cancer?
Adenocarcinoma
Type of cells in the cardia
Mucus secreting cells
Type of cells in the fundus and body of stomach
Mucoid, Chief, and Parietal Cells
Cells in the pylori
Mucus secreting cells and endocrine cells
30% of gastric cancers originate in the_______stomach, 20% in ________, and 40% in ___________.
Distal
Mid
Proximal third
What kind of fungus is a risk factor for gastric cancer?
Aflatoxin
What kind of blood type is a risk factor for gastric cancer?
Group A
Common symptom of gastric cancer
Postprandial fullness
A patient presents with palpable enlarged stomach with succession splash…….
Gastric Cancer
Which lymph nodes are generally enlarged in gastric cancer?
Virchow Nodes
Irish Nodes
Test used to evaluate the gastric wall, obtain a biopsy and establish lymph node involvement.
EGD
If you wanted to assess the tumor stage for preoperation what test would you use?
EUS
Metastatic ovarian nodules (tumor).
Krukenberg’s tumor
Periumbilical nodes (tumor).
“Sister Mary Jospeh node”
Metastasis to the peritoneal cul-de-sac (tumor)
Blumer’s shelf
What test would you use when obstructive sx are present?
Double-contrast upper GI series and barium swallows.
Tests used to evaluate for metastatic lesions.
Chest Radiography
CT or MRI
Lab tests for Gastric Cancer
CBC-id anemia (found in 30% of pt’s b/c of bleeding)
CMP:used to characterize the patient’s clinical state
Carcinoembryonic antigen (CEA): inc. in 45-50%
Cancer Antigen 19-9: elevated in 20%
Stool occult blood test
Tx of gastric adenocarcinoma
Complete surgical removal of the tumor with RESECTION of adjacent lymph nodes (only chance of survival)
Cure rate for early lesions limited to the mucosa or submucosa in gastric adenocarcinoma
> 80%
What additional tx would you give to medically fit patients with potentially resectable tumors?
Preoperative chemo or chemoradiotherpy followed by surgery
Tx of choice for pt’s with DISTAL carcinomas.
Subtotal gastrectomy
What kind of gastrecomy is required for PROXIMAL tumors?
TOTAL or NEAR-TOTAL gastrectomy
What is the best form of palliation?
Reduction of tumor bulk
A relatively radioresistant tumor?
Adenocarcinoma
What can prolong survival in pt’s with adenocarcinoma?
Combo radiotherapy and 5-fluorouracil (5-FU)
Probability of survival after 5 yrs for the 25-30% of pt’s unable to complete resection is 20% for _________and <10% for _______
Distal
Proximal