What is presacral soft tissue?
The presacral space is the area between the rectum and lowest part of your the spine, which is called the sacrum. The presacral space is inside the pelvis, behind the rectum and in front of the coccyx and sacrum. Normally it is empty, or it contains a pocket of fat.
What is presacral soft tissue thickening?
Also referred to as retrorectal tumors, presacral tumors are rare tumors that develop in the area between the rectum and lowest part of the spine (or back of the pelvis) called the sacrum.
What is a presacral tumor?
Presacral or retrorectal tumors are very rare tumors that develop in a space between the rectum and sacrum or back of the pelvis. Presacral tumors arising in this area represent a variety of lesions from simple benign cysts to complex cancers that can invade surrounding structures.
What causes presacral fluid?
Causes of increased pre-sacral space are: ulcerative colitis, granulomatous colitis, lymphogranuloma venereum, and in postirradiation changes, thrombosis of the inferior vena cava and tuberculous proctitis, tumor of the sacrum or posterior wall of the rectum.
What is Mesorectal fascia?
The mesorectal fascia is a layer of connective tissue enclosing the perirectal fat that surrounds the rectum. It is an important anatomical structure in rectal cancer staging, as it forms the circumferential resection margin for the non-peritonealised portion of the rectum.
What does Retrorectal mean?
Medical Definition of retrorectal : situated or occurring behind the rectum a retrorectal abscess.
Where is the presacral space located?
The presacral space is the area between the rectum and lowest part of your the spine, which is called the sacrum. The presacral space is inside the pelvis, behind the rectum and in front of the coccyx and sacrum.
What structures are located in Retrorectal fat space?
The presacral space is located between the rectum and the sacrococcygeal part of the spine….The presacral space contains a variety of tissue:
- mesenchymal tissue.
- lymph nodes.
- nerve plexuses.
- blood vessels.
What does a presacral soft tissue mass mean?
A presacral soft-tissue mass often represents the newly displaced pelvic structures, postsurgical fibrosis, or postsurgical granulation tissue ( Fig 4 ).
What kind of tissue is in the presacral space?
The presacral space contains a variety of tissue: fat mesenchymal tissue lymph nodes nerve plexuses blood vessels
How big is the presacral region on a CT scan?
CT of the five patients showed well-encapsulated and heterogeneous soft-tissue masses in the presacral region, with a mean diameter of 7.4 cm (range, 4.9–11.0 cm). MRI revealed fat tissue interspersed with soft tissue in the presacral region.
Where is the presacral space in the pelvis?
Introduction The presacral space is a clinically important space that is relevant to multiple dis- ciplines. It lies at the intersection of the axial skeleton, neural axis, and soft tissues of the pelvis. Its anatomic boundaries include the rectum anteriorly; the presa-