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gi pathology Exam 2024 | QUESTIONS with 100% Solutions Rated A+
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gi pathology Exam 2024 | QUESTIONSwith 100% Solutions Rated A+
Large bowel layers
1. Mucosa
2. Submucosa
3. Muscularis
4. Serosa
5. Mesothelium
which bowel layers are echogenic?
1, 3, 5 (mucosa, muscularis, mesothelium)
which bowel layers are hypoechoic?
2,4; (submucosa; serosa)
Mucosa
FIRST LAYER
- echogenic; directly contacts Intraluminal contents; lines with epithelium to
increase absorption
Submucosa
SECOND LAYER
- Hypoechoic; contains blood vessels and lymph channels in connective tissue
Muscularis
THIRD LAYER
- echogenic; contains circular and longitudinal bands of fiber
Serosa
FOURTH LAYER
- hypoechoic; thin, loose layer of connective tissue
Mesothelium
, FIFTH LAYER
- echogenic; covers intraperitoneal bowel loops
duplication cyst symptoms
MORE OFTEN IN FEMALES
- developmental errors
- symptoms dependent on location, size, and histology
- can originate in PANCREAS or DUODENUM
Duplication cyst clinically
Abdominal pain, intestinal obstruction, vomiting, distention and possible fistula formation
Duplication cyst sonographically
Anechoic with a thin outer echogenic
rim (mucosa) & wider outer rim (Muscle layer)
gastric bezoar
intragastric mass composed of accumulated ingested material
TYPES:
1. Tichobezoars (hair balls in young women)
2. Phtyobezoars (vegetable matter)
3. Concretions (inorganic materials such as sand, dirt, shellac)
Gastric Bezoar clinically
N/V, cramps epigastric pain, bowel obstruction
Gastric Bezoar imaging of choice
CT; occasionally confirmed with US as a complex mass
Intramural Benign Gastric Tumors
- benign masses composed of elements in the gastric wall
- GI stromal
- many types
- Leiomyoma is the most common
- Schwannoma is another type (tumors of tissue that covers nerves-usually benign)
leiomyoma
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