AN ANALYSIS OF VARIATIONS OF THE SEGMENTAL VESSELS OF THE RIGHT LOWER LOBE IN FIFTY CHINESE LUNGS
- VernacularTitle:右肺下叶支气管及血管——Ⅱ.右肺下叶的血管
- Author:
Kenpen WANG
;
Hopi TAI
- Publication Type:Journal Article
- From:
Acta Anatomica Sinica
1955;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
The pattern of branching and distribution of the blood vessels in the right lowerlobe of 50 adult Chinese lungs were studied and the following results were obtained. 1. In 68% of the specimens, the A~6 arose as a single branch, which bifurcated intotwo (50%) or three rami (18%). In 30% of the cases there were two separate A~6arteries and in 2% there were three. 2. The subsuperior bronchus (B~*) might be supplied with 1--3 arteries. Twenty-seven arteries to 22 subsuperior bronchi were found in 19 cases whereas fifty nine arteriesto 57 accessory subsuperior bronchi (BX_(10)~*) occurred in 43 cases. 3. A~7 occurred in 78% as a single branch, among which 34% were branched offfrom the basal artery and the remaining arose in combination with other arteries. A~7occurred in two branches in 22%. A~8 arose as a single branch in 22% and in com-bination with other arteries in 44%. 34% of A~8 was present in two branches, thereforethe variations of A~8 are far greater than that of B~8. The arteries to the lateral basalsegment (A~9) arose as a single branch of the basal artery in 44% of the specimens. Inanother 38% A~9 was of two branches. In the remaining 16%, it was associated withbranches to the neighboring segments. In 98% of the specimens, the artery to the pos-terior basal (A~(10)) divided into A~(10) a and A~(10)b. 4. The veins from the different segments of the right lower lobe were drained intotwo principal pulmonary veins. A superior vein (V~6), which is usually a single branch,occasionally two branches (18%), drained the vein from the superior segment, and alower vein (common basal vein) draining the veins from the basal segments. The com-mon basal vein formed by the union of a superior and an inferior basal veins was foundin 90% of the specimens. The basal veins may be classified into three types; the un-complicated type is the prevailing pattern which occurs in 52%.
