J Cardiovasc Ultrasound.  2012 Sep;20(3):146-149. 10.4250/jcu.2012.20.3.146.

Blood Cyst of Subvalvular Apparatus of the Mitral Valve in an Adult

• Park MH
• Jung SY
• Youn HJ
• Jin JY
• Lee JH
• Jung HO

• KMID: 1808350
• DOI: http://doi.org/10.4250/jcu.2012.20.3.146

Abstract

Blood cysts of the heart are rare benign tumors, usually involving the cardiac valves. They are found mainly in the first month of life and in children; and are rarely seen in adults. Here, we report a case of a blood cyst on the subvalvular apparatus of the mitral valve, which was incidentally discovered during chest computed tomography in a 47-year-old man. To the best of our knowledge, this is the first reported case of blood cyst of the heart in an adult in Korea.

Keyword

Blood cyst; Mitral valve; Adult

MeSH Terms

Adult
Heart
Heart Valves
Humans
Korea
Middle Aged
Mitral Valve
Thorax

Figure

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  Fig. 1 Echocardiographic findings. A: A large cyst with small calcification (arrow) attached to the anterior mitral leaflet (transthoracic echocardiographic apical four-chamber view). B: A cyst (arrow) attached to the chordae tendinae and tip of papillary muscle of the anterior mitral leaflet (transesophageal echocardiographic five-chamber view). LA: left atrium, LV: left ventricle.

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  Fig. 2 Cardiac magnetic resonance imaging. A: 18 × 15 mm sized, lobulated cystic mass (arrow) in the left ventricle. The mass was isointense on T1 weighted sequence. B: The mass (arrow) was hyperintense on T2 weighted sequence. C and D: The mass (arrow) did not show contrast enhancement. LA: left atrium, LV: left ventricle, RA: right atrium, RV: right ventricle.

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  Fig. 3 Surgical and histological findings. A: A bluish cystic mass was seen attached to the chordal structure of mitral valve and tip of the papillary muscle. B and C: Cystic mass was excised and revealed old blood with a yellowish calcified body in the cyst. D: Cystic wall composed of dense connective tissue with flat lining cells. E: Flat lining cells were stained with antibody CD31. CD31: cluster of differentiation 31.

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