Fig.   57.     Collection  of  cysta  filled  with  glandular  growths  in  and  protruding
from  the  mammary  gland.    Half  the  natural  size.
428  PEOLIFEROUS  MAJVIMAEY  CYSTS.
These  facts  tave  been  obserTed  especially  by  Mr.  Birkett,'  and
"Were  very  "well  marked  in  a  case  -whicli  I  was  able  to  examine,  and  of
which  Pig.  57  represents  a  section.  It  was  a  very  large  protruding
tumonr  of  the  breast,  removed  by  Sir  W.  Lawrence  from  a  lady  fifty-
five  years  old.  It  had  been  observed  for  thirty  years,  remaining  like  a
small  knot  for  twenty-six  years,  and  then  slowly  increasing,  till,  at  the
end  of  five  years,  a  red  fungous  mass  protruded  from  the  breast,  bled
freely  sometimes,  and  discharged  profasely.  This,  too,  increased
quickly,  and  was  painful.  The  whole  breast  was  removed,  and  the
patient  recovered.
The  tumour  (Kg.  67)  measured  nearly  seven  inches  by  five.  The
part  which  did  not  protrude  beyond  the  level  of  the  skin  was  imbedded
in  the  substance  of  the  gland.  It  consisted  of  numerous  lobes  of  vari-
ous sizes  and  shapes,  and  variously  divided  into  smaller  lobes ;  all  being
evidently  formed  of  distinct  cysts,  closely  packed  and  compressed
together.  Most  of  these  cysts  were  filled  with  intra-cystic  growths  ;
yet  in  many  of  them  it  was  easy  to  pass  a  probe  between  their  walls
and  the  surfaces  of  their  contained  growths,  which  were  fixed  to  only
one  part  of  the  cyst  walls.  In  the  protruding  part,  of  which  the  over-
hanging outer  border  is  shown  in  the  sketch  (Fig.  57),  the  same
general  plan  of  structure  could  be  discerned,  but  less  distinctly.
