Tigered effect of heart is seen in
**Core Concept**
The "tigered effect" of the heart, also known as the "tigered appearance," is a radiographic finding characterized by mottled or striped patterns of myocardial enhancement on cardiac imaging. This phenomenon is primarily related to the heterogeneity of myocardial perfusion and the varying densities of the cardiac tissue.
**Why the Correct Answer is Right**
The tigered effect is typically seen in cases of coronary artery disease (CAD), where areas of myocardial ischemia or infarction lead to differences in myocardial density. The varying degrees of perfusion and fibrosis result in a mottled appearance on cardiac imaging, such as on computed tomography (CT) or magnetic resonance imaging (MRI). The altered density of the myocardium creates the characteristic striped or tigered pattern, which is often associated with CAD.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because the tigered effect is not a characteristic finding in cases of cardiomyopathy.
**Option B:** This option is incorrect because the tigered effect is not typically associated with cardiac tumors or metastases.
**Option C:** This option is incorrect because the tigered effect is not a feature of cardiac amyloidosis, which typically presents with a more homogeneous pattern of myocardial enhancement.
**Clinical Pearl / High-Yield Fact**
The tigered effect of the heart is an important radiographic finding that can help clinicians diagnose and manage patients with coronary artery disease. It is essential to recognize this pattern on cardiac imaging to avoid misdiagnosis and ensure appropriate treatment.
**Correct Answer: C. Cardiac amyloidosis**