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Zorluk: OrtaInterpreting Imaging Results

A 38-year-old woman comes to the clinic for evaluation of an incidental liver mass. Two weeks ago, she underwent a right upper quadrant abdominal ultrasound for biliary colic, which revealed cholelithiasis and a 4.5-cm solid mass in the right hepatic lobe. Her abdominal pain has completely resolved since that time. She takes a daily combined oral contraceptive pill, which she has used for the past 10 years. She drinks alcohol socially and does not use tobacco. Her vital signs and physical examination are unremarkable. Laboratory studies, including a complete blood count, comprehensive metabolic panel, and alpha-fetoprotein, are all within normal limits. A multiphasic contrast-enhanced CT scan of the abdomen is performed to further characterize the mass. The imaging reveals a well-demarcated 4.5-cm lesion in the right lobe of the liver. During the arterial phase, the lesion demonstrates early peripheral, nodular contrast enhancement. During the portal venous and delayed phases, there is progressive, centripetal fill-in of the contrast material. Based on the interpretation of these imaging results, which of the following is the most appropriate next step in management?

  1. Reassurance and routine careCevap
  2. B
    Discontinuation of oral contraceptives
  3. C
    Image-guided percutaneous core needle biopsy
  4. D
    Surgical resection of the liver mass
  5. E
    Repeat multiphasic CT scan in 3 months

Cevap

The most appropriate next step is reassurance and routine care, as the imaging findings are diagnostic of an asymptomatic hepatic hemangioma.
The correct answer is reassurance and routine care. The patient's multiphasic CT scan demonstrates peripheral, nodular enhancement during the arterial phase followed by progressive, centripetal (inward) fill-in during the portal venous and delayed phases. These specific imaging characteristics are pathognomonic for a cavernous hepatic hemangioma, which is the most common benign liver tumor. Because the patient's abdominal pain was due to biliary colic that has since resolved, the hemangioma is an asymptomatic, incidental finding. Asymptomatic hepatic hemangiomas have no malignant potential and do not require further diagnostic workup, routine surveillance imaging, medication modifications, or surgical intervention.

Adım Adım Çözüm

1
Evaluate the patient's presentation and history.
A 38-year-old asymptomatic woman with an incidental 4.5-cm liver mass and a 10-year history of oral contraceptive use.
To determine the clinical context, assess for symptoms related to the mass, and identify relevant risk factors.
2
Interpret the multiphasic CT findings.
The mass shows peripheral, nodular enhancement in the arterial phase and progressive, centripetal fill-in during later phases.
To characterize the vascular dynamics of the liver lesion, which differentiates benign from malignant etiologies.
3
Establish the diagnosis based on the imaging.
The enhancement pattern is pathognomonic for a cavernous hepatic hemangioma.
Hepatic hemangiomas uniquely exhibit this specific progressive centripetal enhancement pattern.
4
Determine the appropriate management.
Reassurance and routine care without further intervention or surveillance.
Asymptomatic hepatic hemangiomas are benign, lack malignant potential, and do not require treatment or routine follow-up.

Anahtar Kavram

Cavernous hepatic hemangiomas classically demonstrate peripheral nodular enhancement with progressive centripetal fill-in on multiphasic contrast-enhanced CT. When asymptomatic, they are benign and require only reassurance and routine care.
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Interpreting Imaging Results

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