Anatomy - Hemicolectomy left, open, curative

Anatomy - Hemicolectomy left, open, curative - general and visceral surgery

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Surgically relevant anatomy
Left lateral transverse colon up to the splenic flexure
Descending colon
Sigmoid colon
Rectum
Transverse colon
Location: Intraperitoneal; mobile fixation via its own mesentery - transverse mesocolon.
Identification: By the so-called
taeniae = taeniae coli = condensations of longitudinal muscle fibers named according to their anatomical relations as
taenia libera (inferior)
taenia omentalis (greater omentum)
taenia mesocolica (transverse mesocolon)
omental appendices = fat-filled tunica serosa
Haustra of colon = haustrae coli = visible sacculations in the wall of the colon wall by the arrangement of the circular muscle fibers (plicae semilunares; evident on endoscopy) which are discernible on the outer wall as crescentic folds
Descending colon
Definition: That segment of the colon between the splenic flexure (flexura coli sinistra) and the sigmoid colon.
Synonym: Colon descendens
Location: Secondarily retroperitoneal; connective tissue attachment of posterior wall with the left kidney as well as with the muscular aponeuroses of the quadratus lumborum and transversus abdominis.
Identification: As in transverse colon, but : Cross section of the descending colon smaller than that of the ascending colon!
Sigmoid colon
Synonym: Colon sigmoideum
Location: Between the descending colon and rectum, where it is fixed by connective tissue to the retroperitoneum and left ilium; strictly intraperitoneal; differs in course and length, usually 40cm long.
Identification: By the taeniae (see above) which gently peter out superior to the rectum.