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Left atrial spindle cell sarcoma: a case report.


ABSTRACT:

Background

Primary cardiac spindle cell sarcomas are extremely rare with only a few cases reported. They are frequently misdiagnosed on cardiac magnetic resonance (CMR) imaging as benign myxoma or thrombi and the suspicion of a malignant sarcoma arises only during surgery. This case report describes a case of cardiac spindle cell sarcoma diagnosed after surgery, where the initial diagnostic possibilities included an intramural thrombus and a cardiac myxoma.

Case summary

A 57-year-old woman was referred to our hospital for evaluation of a possible recurrent myxoma in the left atrium on echocardiography. Cardiac magnetic resonance imaging confirmed these masses as mural thrombotic masses, with a possible remnant of myxoma. After 2 months of anticoagulation therapy, the masses did not decrease in size on CMR imaging, and surgical removal was indicated. The atrial masses were surgically resected together with a large part of the left atrium. Histological examination showed spindle cell sarcoma. Unfortunately, the resection margins were positive and it was not possible to remove more atrium. PET-CT revealed metastasis in the right femur. The patient passed away 1?year after surgery.

Discussion

The rarity of spindle cell sarcoma and its similarities to benign cardiac myxoma and thrombi on echocardiography and CMR imaging present a diagnostic challenge when evaluating patients pre-operatively. Therefore, a malignant spindle cell sarcoma may only be diagnosed during surgery, after histological examination.

SUBMITTER: Braams NJ 

PROVIDER: S-EPMC6439379 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature

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Left atrial spindle cell sarcoma: a case report.

Braams Natalia J NJ   Kaffka Genaamd Dengler Selma E SE   Rutten Emma G G M EGGM   de Boer Karin K  

European heart journal. Case reports 20190206 1


<h4>Background</h4>Primary cardiac spindle cell sarcomas are extremely rare with only a few cases reported. They are frequently misdiagnosed on cardiac magnetic resonance (CMR) imaging as benign myxoma or thrombi and the suspicion of a malignant sarcoma arises only during surgery. This case report describes a case of cardiac spindle cell sarcoma diagnosed after surgery, where the initial diagnostic possibilities included an intramural thrombus and a cardiac myxoma.<h4>Case summary</h4>A 57-year-  ...[more]

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