Eccentric hypertrophy

… refers to the thickening and enlargement of the myocardium in the walls of the heart, especially the ventricles. Depending on the area where hypertrophy is primarily observed, there are various types, such as atrial hypertrophy, right ventricular hypertrophy, left ventricular hypertrophy, septal hypertrophy, and biventricular hypertrophy. When hypertrophy occurs toward the inner cavity and does not increase in volume, it is called centripetal hypertrophy, and when the volume increases along with the thickening of the wall and is accompanied by cardiac dilation, it is called eccentric hypertrophy. When hypertrophy occurs, the trabeculae and papillary muscles also thicken, so the weight of the heart also increases. In severe cases, the thickness of the heart wall can reach three times the normal thickness and the weight can reach four times the normal thickness. …

*Some of the terminology that refers to "eccentric hypertrophy" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…心臓の壁，とくに心室の壁の心筋が肥大して厚くなることをいう。肥大が主としてみられる部位によって，心房肥大，右心室肥大，左心室肥大，中隔肥大，両室肥大などの種類があり，肥大が内腔に向かって起こり，容積が大きくならない場合を求心性肥大，壁の肥大とともに容積が増大し，心臓の拡張を伴う場合を遠心性肥大という。肥大が起こると，肉柱や乳頭筋も太くなるため，心臓の重量も増し，著しい肥大では，心臓壁の厚みは正常の3倍，重量は4倍にも達することがある。…

※「遠心性肥大」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報