RT Book, Section
A1 Ellison, E. Christopher
A1 Zollinger, Robert M.
SR Print(0)
ID 1127271634
T1 THORACIC AND PULMONARY ANATOMY
T2 Zollinger's Atlas of Surgical Operations, 10e
YR 2016
FD 2016
PB McGraw-Hill Education
PP New York, NY
SN 978-0-07-179755-9
LK accesssurgery.mhmedical.com/content.aspx?aid=1127271634
RD 2024/04/25
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)  which  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,  since  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  with  the  upper  lobe  and  occupies  a  relatively  narrow,  wedge-shaped  area  along  the  anteroinferior  border  of  that  lobe.