Online Questions - Valid Practice To your AB-Abdomen Exam (Updated 165 Questions)
Practice To AB-Abdomen - Remarkable Practice On your Abdomen Sonography Examination Exam
NEW QUESTION # 38
Which organ is held in place by the lienorenal, gastrosplenic, and phrenocolic ligaments?
- A. Left kidney
- B. Stomach
- C. Pancreas
- D. Spleen
Answer: D
Explanation:
The spleen is suspended in the left upper quadrant by several peritoneal ligaments, including:
* Lienorenal (splenorenal) ligament - attaches spleen to the left kidney.
* Gastrosplenic ligament - attaches spleen to the stomach.
* Phrenocolic ligament - supports the spleen inferiorly between diaphragm and colon.
These ligaments stabilize the spleen's position while allowing some mobility.
According to Moore's Clinically Oriented Anatomy:
"The spleen is connected to the stomach by the gastrosplenic ligament and to the posterior abdominal wall (near the left kidney) by the splenorenal (lienorenal) ligament. The phrenocolic ligament provides inferior support." Reference:
Moore KL, Dalley AF, Agur AMR. Clinically Oriented Anatomy. 8th ed. Wolters Kluwer, 2018.
Gray's Anatomy for Students, 4th ed., Elsevier, 2019.
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NEW QUESTION # 39
Which vascular condition is most likely associated with the sonographic findings demonstrated in this image?
- A. Median arcuate ligament syndrome
- B. Splenic artery aneurysm
- C. Budd-Chiari syndrome
- D. Recanalized umbilical vein
Answer: D
Explanation:
The ultrasound image demonstrates a tubular, anechoic structure coursing anterior to the left portal vein and heading toward the anterior abdominal wall. This is consistent with a recanalized umbilical vein, which is an important collateral pathway that reopens in cases of portal hypertension.
Normally, the umbilical vein becomes obliterated after birth and forms the ligamentum teres. However, in the setting of significant portal hypertension, the umbilical vein may recanalize and serve as a collateral route to decompress the portal system.
Sonographic features of a recanalized umbilical vein:
* Anechoic, tubular structure in the ligamentum teres fissure
* Seen anterior to the left portal vein
* Color Doppler confirms hepatofugal venous flow
* Associated with signs of portal hypertension (e.g., splenomegaly, varices) Differentiation from other options:
* A. Budd-Chiari syndrome: Involves hepatic vein outflow obstruction; ultrasound shows absent or narrowed hepatic veins and may have caudate lobe hypertrophy.
* B. Splenic artery aneurysm: Typically visualized near the splenic hilum as a pulsatile cystic mass; Doppler shows arterial flow.
* D. Median arcuate ligament syndrome: Involves compression of the celiac axis; best assessed with Doppler showing elevated velocities on expiration.
References:
Rumack CM, Wilson SR, Charboneau JW, Levine D. Diagnostic Ultrasound. 5th Edition. Elsevier, 2018.
Chapter: Portal Hypertension and Collaterals, pp. 101-104.
American Institute of Ultrasound in Medicine (AIUM). Practice Parameter for the Performance of a Vascular Ultrasound Examination, 2020.
Radiopaedia.org. Recanalized umbilical vein: https://radiopaedia.org/articles/recanalised-umbilical-vein
NEW QUESTION # 40
Which laboratory value stays elevated longest and is considered the most reliable in diagnosing pancreatitis?
- A. Lipase
- B. Amylase
- C. Somatostatin
- D. Trypsin
Answer: A
Explanation:
Lipase is the most sensitive and specific laboratory marker for diagnosing acute pancreatitis. It rises earlier, remains elevated longer (up to 14 days), and is more pancreas-specific than amylase. Amylase may normalize within 48-72 hours and may also be elevated in non-pancreatic conditions.
According to ACG (American College of Gastroenterology) Guidelines:
"Serum lipase is preferred over amylase due to its higher sensitivity, specificity, and prolonged elevation in pancreatitis." Reference:
American College of Gastroenterology (ACG) Clinical Guideline: Management of Acute Pancreatitis, 2013.
Rumack CM, Wilson SR, Charboneau JW, Levine D. Diagnostic Ultrasound. 5th ed. Elsevier, 2017.
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NEW QUESTION # 41
Which action should a sonographer take if the abdominal aorta measures 5.5 centimeters in the anteroposterior diameter?
- A. Release patient from care
- B. Disclose the diagnosis to the patient
- C. Follow the routine protocol for abdominal ultrasound
- D. Report the finding to the radiologist immediately
Answer: D
Explanation:
An abdominal aortic aneurysm (AAA) measuring #5.5 cm represents a significantly increased risk of rupture and often requires surgical evaluation. The sonographer must report this critical finding immediately to the interpreting physician. The sonographer should never disclose a diagnosis directly to the patient.
According to AIUM and SRU Guidelines:
"An aortic diameter of 5.5 cm or greater should be promptly reported to the interpreting physician due to the high risk of rupture." Reference:
AIUM Practice Parameter for Abdominal Aortic Ultrasound, 2020.
Society of Radiologists in Ultrasound (SRU) Consensus Statement, 2003.
NEW QUESTION # 42
Which diagnosis is most consistent with this image from a patient with acute scrotal pain?
- A. Epididymitis
- B. Testicular torsion
- C. Testicular rupture
- D. Scrotal abscess
Answer: B
Explanation:
The grayscale ultrasound image demonstrates a uniformly enlarged, hypoechoic (dark), and heterogeneous testis without signs of surrounding scrotal wall thickening or a discrete fluid collection. This pattern is highly suggestive of testicular torsion in the setting of acute scrotal pain.
Sonographic features of testicular torsion on grayscale imaging:
* Enlarged testis
* Diffusely hypoechoic parenchyma
* Loss of normal homogeneity
* Absence of internal vascular flow on Doppler imaging (not shown here but critical in confirming diagnosis) Testicular torsion occurs due to twisting of the spermatic cord, leading to vascular compromise and eventual infarction if not promptly corrected. It is a surgical emergency and typically presents in adolescent males with sudden-onset, severe unilateral testicular pain.
Comparison of answer choices:
* A. Scrotal abscess appears as a complex fluid collection with irregular margins and posterior enhancement.
* B. Testicular rupture would show discontinuity of the tunica albuginea, heterogeneous texture, and often a hematocele.
* C. Testicular torsion - Correct. The enlarged, hypoechoic, heterogeneous testis is characteristic, particularly in the acute phase.
* D. Epididymitis typically shows an enlarged, hypervascular epididymis and may extend to the testis (epididymo-orchitis), but vascularity is usually increased rather than absent.
References:
Dogra VS, Gottlieb RH, Oka M, Rubens DJ. Sonography of the scrotum. Radiology. 2003;227(1):18-36.
Rumack CM, Wilson SR, Charboneau JW, Levine D. Diagnostic Ultrasound, 5th ed. Elsevier; 2017.
AIUM Practice Parameter for the Performance of a Scrotal Ultrasound Examination (2021).
NEW QUESTION # 43
Which term refers to the testicular capsule?
- A. Tunica vaginalis
- B. Pampiniform plexus
- C. Dartos fascia
- D. Tunica albuginea
Answer: D
Explanation:
The tunica albuginea is the dense fibrous capsule that directly surrounds the testicular parenchyma. The tunica vaginalis is a serous covering surrounding the testis externally, and the dartos fascia and pampiniform plexus are part of the scrotal wall and spermatic cord, respectively.
According to Rumack's Diagnostic Ultrasound:
"The tunica albuginea is the fibrous capsule surrounding the testis and forming septa within the gland." Reference:
Rumack CM, Wilson SR, Charboneau JW, Levine D. Diagnostic Ultrasound. 5th ed. Elsevier, 2017.
AIUM Practice Parameter for Scrotal Ultrasound, 2020.
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NEW QUESTION # 44
Which condition is most likely in a patient presenting with weight loss and fatigue along with elevated liver enzymes, elevated potassium, and decreased sodium?
- A. Conn syndrome
- B. Acute pancreatitis
- C. Addison disease
- D. Hepatocellular carcinoma
Answer: C
Explanation:
Addison disease (primary adrenal insufficiency) results in insufficient production of cortisol and aldosterone.
The hallmark laboratory findings include:
* Hyponatremia (low sodium)
* Hyperkalemia (high potassium)
* Elevated liver enzymes (due to nonspecific hepatic involvement)
* Fatigue, weight loss, and hypotension are common clinical features.
* Conn syndrome (B) causes hyperaldosteronism, leading to hypokalemia (not hyperkalemia).
* Acute pancreatitis (C) would typically show elevated amylase/lipase.
* Hepatocellular carcinoma (D) may present with elevated liver enzymes but not the electrolyte pattern described.
Reference Extracts:
* Nieman LK. "Diagnosis and Treatment of Primary Adrenal Insufficiency." J Clin Endocrinol Metab.
2011;96(7):1957-1966.
* Rumack CM, Wilson SR, Charboneau JW, Levine D. Diagnostic Ultrasound. 5th ed. Elsevier, 2017.
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NEW QUESTION # 45
Which change of the inferior vena cava spectral Doppler waveform is expected superior to a nonocclusive thrombus?
- A. Dampening
- B. Increased velocity
- C. Becomes multiphasic
- D. Absence of flow
Answer: A
Explanation:
In the presence of a nonocclusive thrombus, Doppler waveform above the thrombus typically shows dampened flow with loss of normal respiratory phasicity due to partial venous outflow obstruction. Complete absence of flow is typically seen with occlusive thrombus.
According to Zwiebel's Introduction to Vascular Ultrasound:
"Partial obstruction produces dampened and continuous flow patterns superior to a nonocclusive thrombus." Reference:
Zwiebel WJ, Pellerito JS. Introduction to Vascular Ultrasound. 6th ed. Elsevier, 2019.
AIUM Practice Parameter for Venous Ultrasound, 2020.
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NEW QUESTION # 46
Which condition is characterized by abnormal dilatation of veins of the pampiniform plexus and most commonly affects the left testicle?
- A. Hydrocele
- B. Varicocele
- C. Hematocele
- D. Spermatocele
Answer: B
Explanation:
A varicocele is an abnormal dilatation of the pampiniform plexus veins, usually seen on the left side due to the perpendicular insertion of the left testicular vein into the left renal vein, making it more susceptible to elevated venous pressure. Sonographically, varicoceles appear as multiple serpiginous anechoic tubular structures that show venous flow on color Doppler, often accentuated with Valsalva maneuver.
Hydrocele (A) is a fluid collection surrounding the testis.
Hematocele (C) is blood within the tunica vaginalis.
Spermatocele (D) is a cystic lesion arising from the epididymis.
Reference Extracts:
Dogra VS, Bhatt S. "Sonographic evaluation of testicular varicoceles." Journal of Ultrasound in Medicine.
2004;23(6): 829-838.
Rumack CM, Wilson SR, Charboneau JW, Levine D. Diagnostic Ultrasound. 5th ed. Elsevier, 2017.
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NEW QUESTION # 47
Which condition is most consistent with this image of a postsurgical breast?
- A. Blood clot
- B. Carcinoma
- C. Seroma
- D. Abscess
Answer: C
Explanation:
The ultrasound image reveals a well-defined, anechoic (black), thin-walled fluid collection located in the subcutaneous or parenchymal plane of the breast. This is most consistent with a seroma, particularly in the context of recent breast surgery.
A seroma is a common postsurgical finding, representing a sterile collection of serous fluid that accumulates in the surgical bed. It typically appears:
* Anechoic (or hypoechoic if older)
* Well circumscribed
* Without internal septations or debris
* Lacking hyperemia or surrounding inflammatory changes
This contrasts with:
* A. Carcinoma - typically presents as an irregular, hypoechoic mass with angular margins, internal vascularity, and shadowing.
* B. Blood clot (hematoma) - often appears heterogeneous, with internal echoes and variable echotexture depending on the age of the clot.
* C. Abscess - appears as a complex fluid collection with thick walls, internal debris, septations, and surrounding hyperemia (often with clinical signs of infection).
D: Seroma - Correct. The described anechoic, clean-walled fluid collection is classic for a postoperative seroma.
References:
Mendelson EB, Bohm-Velez M, Berg WA.ACR BI-RADS Atlas: Ultrasound. American College of Radiology; 2013.
Stavros AT. Breast Ultrasound. Lippincott Williams & Wilkins; 2004.
Rumack CM, Wilson SR, Charboneau JW, Levine D. Diagnostic Ultrasound, 5th ed. Elsevier; 2017.
NEW QUESTION # 48
Which malignancy most commonly metastasizes to the testes?
- A. Prostate cancer
- B. Non-Hodgkin lymphoma
- C. Hodgkin lymphoma
- D. Bladder cancer
Answer: A
Explanation:
Testicular metastases are rare and usually identified in older patients. The most frequent primary site of malignancies metastasizing to the testes is theprostate. Studies (Ulbright and Young, 2008; Mosharafa et al.,
2003) indicate that prostatic adenocarcinoma accounts for the highest number of testicular metastases, with lung and gastrointestinal tract malignancies also contributing less frequently. These metastases can be unilateral or bilateral and are often discovered incidentally during surgical intervention for prostate cancer.
The metastatic route involves retrograde venous extension, arterial embolism, or lymphatic dissemination.
Histologically, prostatic adenocarcinoma in the testis can be confirmed viaimmunohistochemical markers like prostate-specific antigen (PSA), supporting its prostatic origin.
References:
Ulbright TM, Young RH. Tumors of the Testis, Adnexa, Spermatic Cord, and Scrotum. AFIP Atlas of Tumor Pathology, 4th Series, Fascicle 18. Armed Forces Institute of Pathology, 2008.
Mosharafa AA, Foster RS, Bihrle R, et al. Clinical and pathologic features of testicular metastases from solid tumors: a 40-year review. Urology. 2003;61(5): 1064-1068.
NEW QUESTION # 49
A 60-year-old man presents to the emergency room, complaining of tearing pain in the chest and abdomen.
Blood pressure readings from the two arms show a difference of more than 20 mm. Which ultrasound finding is most likely associated with this presentation?
- A. Thickened gallbladder wall
- B. Intimal flap in the aorta
- C. Echogenic material in the inferior vena cava
- D. Pericardial fluid
Answer: B
Explanation:
An intimal flap in the aorta is a hallmark ultrasound finding of aortic dissection, which can present with tearing chest/abdominal pain and differential blood pressures between arms. The flap represents separation of the intimal and medial layers of the aortic wall.
According to Rumack's Diagnostic Ultrasound:
"An intimal flap visualized within the aorta is diagnostic of an aortic dissection." Reference:
Rumack CM, Wilson SR, Charboneau JW, Levine D. Diagnostic Ultrasound. 5th ed. Elsevier, 2017.
American Heart Association (AHA) Guidelines for Aortic Disease, 2020.
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NEW QUESTION # 50
Which sonographic finding is most consistent with this image of the abdominal aorta?
- A. Stenosis
- B. Dissection
- C. Aneurysm
- D. Occlusion
Answer: C
Explanation:
The ultrasound image provided shows a transverse view of the abdominal aorta, with a clearly measured aortic diameter of 5.71 cm. A normal adult abdominal aorta should measure less than 3.0 cm in anterior- posterior diameter. Any measurement exceeding this threshold is defined as an abdominal aortic aneurysm (AAA).
In this case, the dilation is well beyond the 3.0 cm threshold, confirming the presence of an aneurysm. The rounded, anechoic/heterogeneous central lumen surrounded by echogenic arterial wall layers further supports this diagnosis.
Comparison of answer choices:
* A. Stenosis: Would show a narrowed lumen with turbulent, aliasing flow on Doppler, not a dilated aorta.
* B. Dissection: Typically shows an echogenic intimal flap separating true and false lumens; no flap is visible here.
* C. Aneurysm: Correct. The aorta's transverse diameter (5.71 cm) confirms the presence of an aneurysm.
* D. Occlusion: Would appear as a lack of flow with thrombus or echogenic content filling the lumen, not dilation.
References:
Rumack CM, Wilson SR, Charboneau JW, Levine D. Diagnostic Ultrasound, 5th ed. Elsevier; 2017.
Society for Vascular Surgery Guidelines: Management of Abdominal Aortic Aneurysms (Chaikof et al., J Vasc Surg, 2018).
Hagen-Ansert SL. Textbook of Diagnostic Sonography, 8th ed. Elsevier; 2017.
NEW QUESTION # 51
Which anatomical area of the male reproductive system is demonstrated in this endorectal image?
- A. Seminal vesicles
- B. Urethra
- C. Prostate base
- D. Ejaculatory ducts
Answer: A
Explanation:
The ultrasound image shown is a transverse endorectal (transrectal) ultrasound, commonly used to evaluate the prostate and adjacent structures. The two hypoechoic (dark) oval-shaped structures seen superior and posterior to the prostate are characteristic of the seminal vesicles.
The seminal vesicles are paired, elongated glands located superior and posterior to the base of the prostate and are best visualized in transverse planes on endorectal imaging. They appear as hypoechoic or anechoic structures with internal septations, depending on the degree of fluid content.
In contrast:
* The urethra appears as a central echogenic linear structure within the prostate.
* The prostate base is more inferior in the scan and is visualized just above the urethra.
* The ejaculatory ducts are usually not as prominently visualized and are located medial to the seminal vesicles, entering the prostate near the verumontanum.
This image most clearly demonstrates the bilateral seminal vesicles.
References:
Rumack CM, Wilson SR, Charboneau JW, Levine D. Diagnostic Ultrasound, 5th ed. Elsevier; 2017.
ACR-AIUM-SRU Practice Parameter for the Performance of an Ultrasound Examination of the Prostate (2021).
Hagen-Ansert SL. Textbook of Diagnostic Sonography, 8th ed. Elsevier; 2017.
NEW QUESTION # 52
Which condition is most consistent with thinning of the renal cortex, reduction in renal length, and prominence of the renal sinus fat in a patient presenting four months after renal transplant with slightly reduced renal function?
- A. Normal findings
- B. Chronic rejection
- C. Acute rejection
- D. Arterial stricture
Answer: B
Explanation:
Chronic rejection presents sonographically as cortical thinning, decreased renal size, and increased echogenicity of the renal sinus fat. Acute rejection typically causes an enlarged, edematous kidney with increased parenchymal echogenicity but preserved size early on.
According to Zwiebel's Introduction to Vascular Ultrasound:
"In chronic rejection, the allograft becomes smaller with cortical thinning, increased echogenicity, and prominence of the central sinus fat." Reference:
Zwiebel WJ, Pellerito JS. Introduction to Vascular Ultrasound. 6th ed. Elsevier, 2019.
AIUM Practice Parameter for Renal Transplant Ultrasound, 2020.
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NEW QUESTION # 53
Which complication is of greatest concern with undescended testis?
- A. Hydrocele
- B. Seminoma
- C. Hernia
- D. Torsion
Answer: B
Explanation:
The most serious long-term complication of undescended testis (cryptorchidism) is an increased risk of testicular malignancy, especially seminoma. Although torsion and hernia may also occur, seminoma is the most concerning complication due to its life-threatening potential.
According to Rumack's Diagnostic Ultrasound:
"Cryptorchidism is associated with a significantly increased risk of seminoma, the most common malignancy in undescended testes." Reference:
Rumack CM, Wilson SR, Charboneau JW, Levine D. Diagnostic Ultrasound. 5th ed. Elsevier, 2017.
American Urological Association (AUA) Guidelines, 2019.
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NEW QUESTION # 54
Which of the following must be sterile for a percutaneous procedure?
- A. Gel within transducer cover
- B. Transducer
- C. Transducer cover
- D. Machine controls
Answer: A
Explanation:
In percutaneous procedures such as biopsies or drainages, maintaining a sterile field is critical to avoid introducing infection. While the transducer is covered by a sterile cover, the gel placed inside this cover (between the probe and the cover) must also be sterile, as it contacts the sterile field. The transducer itself and machine controls are not sterile but are handled appropriately to avoid field contamination.
According to the AIUM Guidelines:
"Sterile coupling gel must be used inside the sterile probe cover during all invasive or percutaneous procedures." (AIUM Guidelines for Cleaning and Preparing Ultrasound Transducers, 2021).
Reference:
AIUM Guidelines for Cleaning and Preparing Ultrasound Transducers and Equipment for Reuse, 2021.
ACR Practice Parameter for Performing Ultrasound-Guided Procedures, 2020.
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NEW QUESTION # 55
Which condition results in the vascular abnormality shown in this image of a renal transplant?
- A. Renal artery stenosis
- B. Arteriovenous malformation
- C. Renal vein thrombosis
- D. Iliac arteritis
Answer: A
Explanation:
The Doppler ultrasound image shows an elevated peak systolic velocity (PSV) of 637 cm/s, an elevated end- diastolic velocity (EDV) of 312 cm/s, and a low resistive index (RI) of 0.51 at the arterial anastomosis of a renal transplant. These findings are characteristic of significant renal artery stenosis (RAS) at the transplant vascular anastomosis.
Key sonographic features of renal artery stenosis:
* Peak systolic velocity (PSV) > 250-300 cm/s at the stenotic segment (this case: 637 cm/s)
* Post-stenotic turbulence with spectral broadening
* Low resistive index (RI < 0.56 suggests downstream vasodilation)
* Elevated acceleration time (AT > 0.07 sec), and reduced acceleration slope
* Aliasing on color Doppler due to high velocity
In this image, the marked increase in velocity with spectral aliasing and low RI is diagnostic of transplant renal artery stenosis - the most common vascular complication post-transplant, typically occurring at the site of surgical anastomosis.
Differentiation from other options:
* A. Iliac arteritis: A rare condition, not typically presenting with these Doppler changes.
* C. Renal vein thrombosis: Would show reversed or absent diastolic flow, not elevated systolic velocities.
* D. Arteriovenous malformation (AVM): Produces a high-velocity, low-resistance waveform but is associated with color bruit, aliasing, and pulsatile venous waveforms - not evident here.
References:
Rumack CM, Wilson SR, Charboneau JW, Levine D. Diagnostic Ultrasound. 5th Edition. Elsevier, 2018.
Chapter: Transplant Imaging, pp. 1035-1045.
American Institute of Ultrasound in Medicine (AIUM). Practice Parameter for the Performance of a Renal Artery Duplex Sonographic Examination, 2020.
Radiopaedia.org. Renal artery stenosis (transplant): https://radiopaedia.org/articles/renal-artery-stenosis- transplant
NEW QUESTION # 56
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