A 32-years-old young businessman student was found to have with a solitary 2 cm space-occupying lesion of mixed echogenicity in the right lobe of liver on ultrasound examination. The rest of the liver was normal except for mild increase in overall echogenicity. Which of the following test should be done next?

**Core Concept**
The patient's ultrasound findings are suggestive of a focal liver lesion, which requires further characterization to determine its nature. The mixed echogenicity of the lesion and the mild increase in overall liver echogenicity indicate the need for additional imaging to differentiate between benign and malignant processes.

**Why the Correct Answer is Right**
The next step in the management of a focal liver lesion is to perform a contrast-enhanced imaging study, such as a CT or MRI scan, to assess the lesion's vascularization and morphology. This will help in differentiating between benign lesions like hemangiomas, cysts, or focal nodular hyperplasia, and malignant lesions like hepatocellular carcinoma or metastases. The contrast-enhanced imaging will provide information on the lesion's arterial and portal venous phases, which is crucial in making a definitive diagnosis.

**Why Each Wrong Option is Incorrect**
**Option A:**
Ultrasound is the initial imaging modality used to detect liver lesions, but it is not sufficient for characterizing the lesion's nature. Ultrasound has limited sensitivity and specificity for differentiating between benign and malignant lesions.

**Option B:**
Magnetic Resonance Cholangiopancreatography (MRCP) is a valuable imaging modality for visualizing the biliary ducts and pancreas, but it is not the best choice for characterizing liver lesions.

**Option C:**
Liver function tests (LFTs) are essential in assessing the liver's synthetic and detoxification functions, but they do not provide information on the nature of the focal liver lesion.

**Clinical Pearl / High-Yield Fact**
When managing a focal liver lesion, it is essential to remember that the size, location, and characteristics of the lesion, as well as the patient's clinical history and risk factors, should be considered when selecting the next imaging modality.

**Correct Answer:** C.

✓ Correct Answer: D. Triple phase CECT