1. Maze procedure and cor triatriatum repair
Hiroyuki Nakajima, MD, Junjiro Kobayashi, MD, Takashi Kurita, MD, Soichiro Kitamura, MD 
The Annals of Thoracic Surgery 
Volume 74, Issue 1, Pages (July 2002)
DOI: /S (02)03374-X

2. Fig 1
(A) Transesophageal echocardiography clearly demonstrated the accessory chamber, the anomalous membranous septum, and severe mitral regurgitation. The dimension of the left atrium was 61 mm. (B) After repair of the mitral valve, regurgitation disappeared completely.
The Annals of Thoracic Surgery  , DOI: ( /S (02)03374-X)

3. Fig 2
(A) Operative view after the circular incision around the pulmonary veins. The accessory chamber communicated with the left atrium by means of two holes (the forceps is passing through the holes) on the abnormal septum. (B) Excision of the whole tissue of the anomalous septum, the division of the superior vena cava, and the circular incision around the orifices of pulmonary veins provided excellent exposure of the mitral valve.
The Annals of Thoracic Surgery  , DOI: ( /S (02)03374-X)