Key result
Surgical excision resolves right atrial compression from an asymptomatic mature cystic teratoma.
Why the study?
Teratoma of the mediastinum causing extrinsic compression to the right atrium is a rare condition with difficult diagnosis through non-invasive investigation.
Case Report (n=1)
Highlights a rare case of a mature mediastinal teratoma causing extrinsic right atrial compression, emphasizing the diagnostic challenges of non-invasive imaging.
Mature mediastinal teratoma may cause right atrial compression; single case leaves open broader diagnostic validation.
INTRODUCTION: This case report illustrates a rare case of teratoma of the mediastinum which was continuous to the pericardium and caused extrinsic compression to the right atrium. CASE PRESENTATION: A 22-year-old Caucasian man with no complaints or comorbid conditions presented to our hospital with obliteration of the right cardiophrenic sinus by a mass. A non-invasive investigation demonstrated a tumoral mass which was continuous to the pericardium and caused extrinsic compression to the right atrium. The clinical suspicion was a pericardial or bronchogenic cyst. Surgical and anatomopathologic findings led to the diagnosis of a mature cystic teratoma with atrophic thymic tissue at the external teratoma surface. CONCLUSION: We present an original report of a mature teratoma causing obliteration of the right cardiophrenic sinus with extrinsic heart compression. The diagnosis of this tumor is very difficult through non-invasive investigation.
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Vieira et al. (2011) conducted a case report in Teratoma of the mediastinum (n=1). Surgical excision was evaluated. Surgical excision of an asymptomatic mediastinal mass in a 22-year-old man revealed a mature cystic teratoma causing extrinsic compression of the right atrium.
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