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Online Lectures : Solitary Pulmonary Nodule SPN CT
MULTIPLE v/s SOLITARY
HRCT
- Density > 160 HU suggests benign lesion
- Calcification suggests benignity with same clauses as on plain radiographs
DYNAMIC CONTRAST ENHANCED CT
- If the lesion does not enhance, it is benign
- If the enhancement is > 20 HU, then it may be an active infective lesion or malignant
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