CTICasesEsophageal Myxoid Leiomyosarcoma
▶ Watch on YouTube — age-restricted, cannot embed here
Imaging findings
Chest radiograph shows double contours along the right heart border, a split carina, and retrocardiac bulges on the lateral view, simulating cardiac chamber enlargement. Chest CT demonstrates a massive, elongated, low-attenuation (25 HU) retrocardiac mass. The mass severely flattens the posterior aspect of the left ventricle and splays the esophageal lumen without causing mechanical destruction of the esophageal wall.
Key takeaways
Myxoid leiomyosarcoma is a rare, low-grade malignant smooth muscle tumor of the esophagus. Its high myxoid/gelatinous content results in characteristic low CT attenuation (typically 20–30 HU), which can easily lead to a misdiagnosis of a benign duplication cyst, although the tumor is surprisingly firm and slimy rather than cystic upon resection.
AI-assisted summary — may contain errors. Verify against the source video. Learn more
More from this webinar
- Carotid-Jugular Fistula and Mediastinal HematomaIatrogenic
- Anomalous Retrovascular Left Upper Lobe BronchusCongenital
- Sarcoidosis with Galaxy SignAutoimmune
- Coccidioidomycosis (Valley Fever)Infection
- Lymphoid Interstitial PneumoniaILD
- Pleomorphic Esophageal LipomaNeoplastic
- Birt-Hogg-Dubé SyndromeCongenital
- Dressler Syndrome (Post-Myocardial Infarction Pericarditis)Inflammatory
See all cases from January 15, 2015 →
Related Neoplastic cases
- Spontaneous Regression of Metastases in Non-Small Cell Lung Carcinoma
- Left Lung Cancer with Direct Intravascular Extension and Tumor Thrombus
- Primary Mediastinal Synovial Sarcoma
- Pleural Inflammatory Myofibroblastic Tumor
- CIC-DUX4 Translocation-Positive Undifferentiated Small Round Cell Sarcoma Mimicking Infection
- Iatrogenic Immunodeficiency-Associated Lymphoma