Peritoneum, Chest and Invasive Procedures - Part 3 Flashcards
What is a cause of a lymphocele in the peritoneum?
Complication of a renal transplant or vascular, urological, or gynecological surgery
What are the clinical findings of a lymphocele in the peritoneum? (2)
- Asymptomatic
- Abdominal pain or
discomfort
What is the US appearance of a lymphocele in the peritoneum? (3)
- Anechoic cystic mass frequently containing septations
- Round or oval in shape
- Well-defined wall margins
- Posterior acoustic
enhancement
What are 4 differential diagnosis of a lymphocele in the peritoneum?
- Seroma
- Resolving hematoma
- Urinoma
- Loculated ascites
Where is a lymphocele in the peritoneum usually found?
Medial to a
renal transplant
What is a cause of malignant ascites in the peritoneum?
Metastasis
What are the clinical findings of malignant ascites in the peritoneum? (2)
- Abdominal distention
2. Abdominal pain or discomfort
What is the US appearance of malignant ascites in the peritoneum? (4)
- Anechoic fluid accumulation in the peritoneal cavity
- GB wall measuring less than 3mm with adjacent ascites
- Internal low-level echoes may
be demonstrated
What are 2 differential diagnosis of malignant ascites in the peritoneum?
- Benign ascites
2. Pseudomyxoma peritonei
What are the causes of pseudomyxoma peritonei in the peritoneum? (2)
- Metastasis
- Ruptured mucinous
cystadenoma
What are the clinical findings of pseudomyxoma peritonei in the peritoneum? (3)
- Abdominal pain
- Abdominal distention
- Constipation
What is the US appearance of pseudomyxoma peritonei in the peritoneum? (3)
- Multiseptated cystic areas in the peritoneal cavity
- Internal echoes or echogenic linear strands
- Matted bowel loops compressed posteriorly
What are 2 differential diagnosis for pseudomyxoma peritonei in the peritoneum?
- Loculated ascites
2. Hemoperitoneum
What are causes for a seroma of the peritoneum? (3)
- Trauma
- Surgery
- Inflammation
What are clinical findings for a seroma of the peritoneum? (2)
- Asymptomatic
2. Abdominal pain or discomfort
What is the US appearance for a seroma of the peritoneum? (3)
- Anechoic mass
- Smooth wall margins
- May conform to the surrounding structures
What are 4 differential diagnosis for a seroma of the peritoneum?
- Biloma
- Urinoma
- Lymphocele
- Resolving hematoma
What are the 2 types of lymphoma?
- Hodgkin’s
2. Non-Hodgkin’s
What is a clinical finding for lymphoma?
Superficial abdominal mass
What is the US appearance for a lymphoma?
Thick, hypo echoic mass that follows the shape of the anterior and lateral abdominal wall
What are 2 differential diagnosis for a lymphoma?
- Lymphadenopathy
2. Bowel
What is the typical origin for a mesenteric cyst? (2)
- Wolffian duct
2. Lymphatic duct
What are the clinical findings for a mesenteric cyst? (2)
- Colicky abdominal pain
2. Intestinal obstruction
What is the US appearance for a mesenteric cyst? (3)
- Cystic structure located in the mesentery
- Smooth wall margins
- Is not associated with any adjacent structure
Where is a mesenteric cyst most commonly located?
In the small-bowel mesentery
What are 5 differential diagnosis for a mesenteric cyst?
- Renal cyst
- Ascites
- Hematoma
- Abscess
- Neoplasm
What is a cause of mesenteric lymphomatous?
Lymphoma
What type of lymphoma is found more commonly with mesenteric lymphomatous?
Non-Hodgkin’s lymphoma
What is the US appearance for mesenteric lymphomatous
Anechoic mass containing a central echogenic target
What kind of US appearance sign is associated with mesenteric lymphomatous?
Sandwich sign
What are 2 differential diagnosis of mesenteric lymphomatous?
- Lymphadenopathy 2. Bowel
What is the cause of an omental cyst? (2)
- Congenital failure of the mesentery to fuse
2. Trauma
What is a clinical finding of an omental cyst?
Asymptomatic
What is the US appearance for an omental cyst? (4)
- Small cystic structure located adjacent to the stomach or lesser sac
- Mass will contour to the bowel margins
- Smooth wall margins
- Honeycomb appearance
What are 6 differential diagnosis for an omental cyst?
- Renal cyst
- Pancreatic pseudocyst
- Hematoma
- Abscess
- Ascites
- Neoplasm