腹内疝CT表现课件
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腹内疝CT表现
CT Diagnosis (Left paraduodenal hernia )
axial contrast-enhanced CT scan in 28-year-old man shows small-bowel loops (white arrow) behind pancreas (P) (black arrow indicates stomach)
腹内疝CT表现
CT Diagnosis (Left paraduodenal hernia )
Axial CT scans demonstrate bowel whin the bowel loops interposed between the stomach and pancreas, some mass effect on the posterior stomach wall, thickened bowel wall, and engorged mesenteric vessels.
腹内疝CT表现
Paraduodenal Hernia
腹内疝CT表现
What’s paraduodenal hernia
• the most common type of internal hernia (53%) • congenital hernia, hernia sac • asymptomatic ,colicky epigastric or
Landzert's fossa is located behind the ascending or fourth part of the duodenum and is formed by the lifting up of a peritoneal fold by the inferior mesenteric vein and ascending left colic artery as they run along the lateral side of the fossa.
腹内疝CTபைடு நூலகம்现
Which findings are present?
Within the left upper abdomen, there is thin sac filled with small bowel with swirling vessels identified within it.
腹内疝CT表现
CT Diagnosis (Left paraduodenal hernia )
CT scan of the midabdomen shows the inferior mesenteric vein (arrowhead), this vessel is a landmark for the inferior mesocolon. which is located at the anteromedial border of the encapsulated jejunal loops (J). Diagram (coronal view) of the surgical findings shows that the fossa Landzert is 4cm in diameter (arrowhead)
腹内疝CT表现
CT Diagnosis (Left paraduodenal hernia )
axial contrast-enhanced CT scan in 11-year-old boy shows small-bowel loops (arrow) between stomach and pancreas
腹内疝CT表现
Which choice is the most likely diagnosis?
• A, Paraduodenal hernia • B, Foramen of Winslow hernia • C, Transmesenteric hernia • D, Trans omental hernia • E, Congenital malrotation
腹内疝CT表现
CT Diagnosis (Left paraduodenal hernia )
coronal construction of contrast-enhanced CT in 28-year-old man shows small-bowel loops between transverse colon (T) and left adrenal gland (arrow)
腹内疝CT表现
CT Diagnosis (Left paraduodenal hernia )
axial contrast-enhanced CT scan in 36-year-old man shows small-bowel loops (arrow) displaying inferior mensteric vein (arrowhead) to left.
periumbilical pain • M:F=3:1 has left and right two subtypes ,the
former accounts for about 3/4
腹内疝CT表现
How paraduodenal hernia hapened
Left paraduodenal hernia occur when bowel prolapses through Landzert's fossa, an aperture present in approximately 2% of the population.
腹内疝CT表现
How paraduodenal hernia hapened
Right subtype occur when bowel prolapses through Waldeyer 's fossa below to the ascending duodenum, and to the right side of the mesocolon .
Case
Old woman with chronic, episodic abdominal pain
腹内疝CT表现
CT images
腹内疝CT表现
CT images
腹内疝CT表现
Which findings are present?
• Venous thrombosis ? • Mesenteric twisting? • Displaced bowel loops ?
CT Diagnosis (Left paraduodenal hernia )
axial contrast-enhanced CT scan in 28-year-old man shows small-bowel loops (white arrow) behind pancreas (P) (black arrow indicates stomach)
腹内疝CT表现
CT Diagnosis (Left paraduodenal hernia )
Axial CT scans demonstrate bowel whin the bowel loops interposed between the stomach and pancreas, some mass effect on the posterior stomach wall, thickened bowel wall, and engorged mesenteric vessels.
腹内疝CT表现
Paraduodenal Hernia
腹内疝CT表现
What’s paraduodenal hernia
• the most common type of internal hernia (53%) • congenital hernia, hernia sac • asymptomatic ,colicky epigastric or
Landzert's fossa is located behind the ascending or fourth part of the duodenum and is formed by the lifting up of a peritoneal fold by the inferior mesenteric vein and ascending left colic artery as they run along the lateral side of the fossa.
腹内疝CTபைடு நூலகம்现
Which findings are present?
Within the left upper abdomen, there is thin sac filled with small bowel with swirling vessels identified within it.
腹内疝CT表现
CT Diagnosis (Left paraduodenal hernia )
CT scan of the midabdomen shows the inferior mesenteric vein (arrowhead), this vessel is a landmark for the inferior mesocolon. which is located at the anteromedial border of the encapsulated jejunal loops (J). Diagram (coronal view) of the surgical findings shows that the fossa Landzert is 4cm in diameter (arrowhead)
腹内疝CT表现
CT Diagnosis (Left paraduodenal hernia )
axial contrast-enhanced CT scan in 11-year-old boy shows small-bowel loops (arrow) between stomach and pancreas
腹内疝CT表现
Which choice is the most likely diagnosis?
• A, Paraduodenal hernia • B, Foramen of Winslow hernia • C, Transmesenteric hernia • D, Trans omental hernia • E, Congenital malrotation
腹内疝CT表现
CT Diagnosis (Left paraduodenal hernia )
coronal construction of contrast-enhanced CT in 28-year-old man shows small-bowel loops between transverse colon (T) and left adrenal gland (arrow)
腹内疝CT表现
CT Diagnosis (Left paraduodenal hernia )
axial contrast-enhanced CT scan in 36-year-old man shows small-bowel loops (arrow) displaying inferior mensteric vein (arrowhead) to left.
periumbilical pain • M:F=3:1 has left and right two subtypes ,the
former accounts for about 3/4
腹内疝CT表现
How paraduodenal hernia hapened
Left paraduodenal hernia occur when bowel prolapses through Landzert's fossa, an aperture present in approximately 2% of the population.
腹内疝CT表现
How paraduodenal hernia hapened
Right subtype occur when bowel prolapses through Waldeyer 's fossa below to the ascending duodenum, and to the right side of the mesocolon .
Case
Old woman with chronic, episodic abdominal pain
腹内疝CT表现
CT images
腹内疝CT表现
CT images
腹内疝CT表现
Which findings are present?
• Venous thrombosis ? • Mesenteric twisting? • Displaced bowel loops ?