RT Book, Section
A1 Ellison, E. Christopher
A1 Zollinger, Jr., Robert M.
A1 Pawlik, Timothy M.
A1 Vaccaro, Patrick S.
A1 Bitans, Marita
A1 Baker, Anthony S.
SR Print(0)
ID 1187820451
T1 Thoracic and Pulmonary Anatomy
T2 Zollinger’s Atlas of Surgical Operations, 11e
YR 2022
FD 2022
PB McGraw-Hill Education
PP New York, NY
SN 9781260440850
LK accesssurgery.mhmedical.com/content.aspx?aid=1187820451
RD 2023/03/23
AB The  gross  anatomic  features  of  both  the  lungs  are  shown  in  FIGURE  1.  On  the  right  side,  the  major  division  between  the  right  lower  (inferior)  lobe  (3)  and  the  two  others  is  a  major  fissure  (2)  that  parallels  the  course  of  the  fourth  rib.  The  height  to  which  the  superior  segment  extends  posteriorly  behind  the  right  upper  (superior)  lobe  (1)  should  be  noted  because  the  presence  of  the  right  lower  lobe  at  this  high  level  is  important  in  interpreting  x-rays.  Of  similar  importance  is  the  position  of  the  right  middle  lobe  (4),  whose  upper  margin  is  demarcated  by  the  approximately  horizontal  fissure  (5).  Accordingly,  the  middle  lobe  is  entirely  in  the  anterior  half  of  the  chest.  In  the  left  lung,  the  superior  segment  of  the  left  lower  (inferior)  lobe  (9)  extends  to  a  similarly  high  posterior  level  beneath  the  left  oblique  fissure  (7)  separating  the  left  upper  (superior)  (6)  and  lower  (inferior)  lobes  (9).  The  lingula  (8)  is,  however,  incorporated  into  the  upper  lobe  and  occupies  a  relatively  narrow,  wedge-shaped  area  along  the  anteroinferior  border  of  that  lobe.