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Abdomen > Peritoneum & Retroperitoneal > Flashcards

Peritoneum & Retroperitoneal Flashcards

0
Q

Kidneys lie in

A

Perirenal space

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1
Q

Striated hypo post to kidneys

A

Quadratus lumborum

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2
Q

Peri aorta several hypo meas > 2 cm adj to the celiac trunk and SMA. Most likely

A

Para aortic lymph nodes

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3
Q

Ab pain, inc serum amylase, fluid pocket in left pararenal space. Most likely

A

Pancreatic pseudocyst

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4
Q

Suspect retroperitoneal fibrosis. What structure image

A

Aorta

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5
Q

See lymph nodes adj to Abd aorta. Should include

A

Diameter meas of each lymph node

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6
Q

Patient has pheochromocytoma. Evaluate

A

Adrenals

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7
Q

Hx of lung cancer. MC mets from lung is ___ evaluate

A

Adrenals

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8
Q

Right adrenal gland location

A

Post to IVC

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9
Q

Looking for lymphadenopathy search

A

Splenic hilum, porta hepatis, renal hilum, and para aortic area

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10
Q

Striated posterior medial to kidney

A

Psoas muscle

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11
Q

Differentiating renal vs adrenal mass

A

Scan patient during deep inspiration and expiration. Adrenals are fixed. Kidneys will move.

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12
Q

Simulates adrenal mass

A

Thick diaphragmatic crus
Accessory spleen
Gastric Diverticulum
Retroperitoneal lymphadenopathy

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13
Q

Anatomic relationship of left adrenal gland

A

Lateral to the Abd aorta and diaphragmatic crus

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14
Q

Location of right diaphragmatic crus

A

Posterior to ivc and right renal artery

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15
Q

Criteria asses Nodular disease

A

Only lymph nodes meas > 1 cm are abnormal

16
Q

Palp mass post renal tx anechoic mass with multiple septations lateral to midline

A

Lymphocele

17
Q

Retroperitoneal compartment contain no solid organs

A

Posterior pararenal space and retrofascial space

18
Q

Retroperitoneal compartment containing psoas and quadratus lumborum muscles

A

Retrofascial space

19
Q

Retroperitoneal compartment mc involved with pseudocyst

A

Anterior pararenal space

20
Q

Retroperitoneal compartment contains aorta

A

Anterior pararenal space

21
Q

Greater sac

A

Diaphragm to pelvis

22
Q

Lesser sac

A

Behind stomach

23
Q

Peritoneum

A

Parietal layer: lines cavities

Visceral layer: lines organs

24
Q

Mesentery

A

Attached sm intestine to abdominal wall

25
Q

Greater and lesser omentum

A

Attaches stomach and duodenum

26
Q

Spaces (where fluid can collect)

A 
Rt & Lt subphrenic space
Perihepatic
Rt sub hepatic (morrisons pouch)
Lt subhepatic (lesser sac and gastro hepatic recess)
Perinephric space 
Paracolic gutters 4
Pelvic CDS (retrovesicle space)
27
Q

Ligaments

A

Double folds of peritoneum

Falciform, coronary, lt triangular, Ligamentum teres, lig venosum, lesser omentum

28
Q

Hernia

A

Defect in Abd wall, protrusion of contents, bowel peristalsis

29
Q

Retroperitoneum

A

From diaphragm to pelvic floor

Contains: kidneys, adrenals, great vessels, pancreas, duodenal sweep, asc & desc colon, abd lymph nodes, somatic nerves, Prostate, uterus, bladder

30
Q

Retroperitoneal spaces

A

Anterior pararenal space
Perirenal space
Posterior pararenal space

31
Q

Lymphadenopathy

A

Floating aorta sign: nodes post to aorta elevate aorta and appears floating

Sandwich sign: nodes ant and post to aorta

Donut ring sign: all around aorta

Sonographic silhouette: nodes ant to aorta attenuate beam and can’t see ant wall of aorta

32
Q

Retroperitoneal tumors

A

Primary tumors rare, usually mets

Can grow big before detected

Lymphoma, liposarcoma, leiomyosarcoma, teratoma, fibrosarcoma, myxosarcoma, Rhabdomyosarcoma

33
Q

Benign tumors

A

Lipomas, sarcomas, fibromas, myxomas, teratomas, neurofibromas

34
Q

Teratoma

A

Retroperitoneal 4th MC site

35
Q

Retroperitoneal fibrosis

A

Fibrous tissue forms a hypo mass that blocks the ureters and causes hydronephrosis.

Hypo mass. Lower sacral region.

Assoc with aortic aneurysm

36
Q

Cystic masses

A

Abscess, hematomas, urinomas, lymphocele

37
Q

Fibrosarcoma US

A

Hyperechoic, complex

Abdomen (15 decks)

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