1. Addison’s lines divide the abdomen into nine regions.
Those regions are the right and left
right and left , right and left
, and the central regions
2. The abdominopelvic cavity is also frequently
divided into four quadrants. Those quadrants
are the , ,
, and .
3. The largest body cavity is called the
, which encompasses the abdomen
4. The thin sheet of tissues that divides the abdominal
cavity into the peritoneal and retroperitoneal
compartments is called the
5. The lesser sac lies immediately posterior to the
6. The greater omentum divides the greater sac into two
compartments: the ,
which means above the colon, and the
, which means below the colon.
7. The right and left
are potential spaces along the lateral borders of the
peritoneal cavity that allow fl uids to travel between
the supracolic and infracolic compartments.
8. When a patient is supine, the most gravity-
dependent portion of the abdominal cavity is the
. This potential
space should always be checked for free fl uid during
the sonographic examination.
9. When a female patient is in the supine position,
the is the most
gravity-dependent portion of the pelvic cavity.
10. When a male patient is in the supine position, the
is the most
gravity-dependent portion of the pelvic cavity.
11. ascites typically has a simple
appearance because it is characterized by a lack of
protein and cellular material.
12. ascites has a more complex and
echogenic appearance because fl uid seeps out from
blood vessels and contains a large amount of protein
and cellular material.
13. The presence of within an abscess
may cause a “dirty” posterior shadow.
14. Free blood within the peritoneal cavity is called
; once the blood organizes into a
focal area or clot, the collection is called
15. results when a
benign appendiceal or ovarian adenoma ruptures,
spilling epithelial cells into the peritoneum, causing
to accumulate within the peritoneal
16. Seromas typically occur in the
postsurgical period, whereas
are typically slower to develop and may present
4 to 8 weeks after surgery, helping to establish a
more defi nitive diagnosis between the two similar-
appearing fl uid collections.
17. Mesenteric cysts may occur anywhere along the
mesentery but are most commonly found originating
18. The term describes the enlargement
of lymph nodes that can result from
diseases such as colitis or malignancies such as
lymphoma or colon cancer.
Kawamura_WB_CH03.indd 21 12/1/11 3:56 PM
22 PART 1 — ABDOMINAL SONOGRAPHY
19. Peritoneal mesothelioma is a rare malignant tumor
of the peritoneum that is associated with exposure to
20. A paracentesis may be done for
purposes to remove a small amount of fl uid for
laboratory testing or for purposes
to relieve pain and pressure that the patient may be
experiencing due to a large volume of ascites.
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