Right Atrial Intimal Sarcoma on 18F-FDG PET/CT.

Area of Science:

• Cardiology
• Oncology
• Radiology

Background:

• Routine cardiological checkups are crucial for early detection of cardiac abnormalities.
• Cardiac masses can present asymptomatically, necessitating advanced imaging for diagnosis.

Observation:

• Transthoracic and transesophageal echocardiography revealed a 3x3 cm nodular mass in the right atrium.
• F-FDG PET/CT demonstrated high metabolic activity within the mass, indicating a potential malignancy.

Findings:

• Surgical excision and subsequent histopathological analysis confirmed the mass as an intimal sarcoma.
• Intimal sarcoma is an extremely rare and highly malignant tumor, particularly at this cardiac location.

Implications:

• This case underscores the diagnostic value of multimodal imaging, including echocardiography and PET/CT, for cardiac masses.
• The successful surgical removal offers insights into managing rare cardiac tumors and emphasizes the need for vigilance in cardiological practice.