Thoracic hemangiomas: imaging via CT, MR, and PET along with pathologic correlation

Area of Science:

• Radiology
• Oncology
• Pathology

Background:

• Thoracic hemangiomas, though rare, require accurate diagnostic imaging.
• Distinguishing benign hemangiomas from malignant neoplasms is crucial for appropriate patient management.

Observation:

• Computed tomography (CT) revealed phleboliths in 71% of cases and fat components in 43%.
• Magnetic resonance imaging (MRI) demonstrated high signal intensity on T2-weighted images in all cases (100%), enhanced by fat-suppression sequences (100%).
• Positron emission tomography (PET) with 18F-fluoro-2-deoxy-D-glucose (FDG) showed mildly elevated uptake.

Findings:

• Phleboliths, fat components on CT and MRI, and characteristic high signal intensity on T2-weighted and fat-suppression MRI are key imaging indicators.
• These imaging findings correlate with the known histologic features of hemangiomas.

Implications:

• Recognizing these imaging features aids in differentiating thoracic hemangiomas from other soft tissue tumors.
• Accurate preoperative imaging can guide surgical planning and improve patient outcomes.
• This study highlights the utility of multi-modal imaging in characterizing thoracic hemangiomas.