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Figures in Original article by MONICA MACCHI (*) ANDREA PORZIONATO (*) CARLA STECCO (*)
FILIPPO BENETTAZZO (*) ANTONIO STECCO (*) ANNA PARENTI (**) GIUSEPPE DODI (***) and RAFFAELE DE CARO (*)

Histo-topographic study of the longitudinal anal muscle

(Figs. 1-3)

oronal section of the right wall of the anal canal
Fig 1. – Coronal section of the right wall of the anal canal, showing the longitudinal anal muscle (LAM) between the internal (IAS) and external anal sphincter (IAS). L, longitudinal muscle of the rectum.
Fig. 2
. – Magnification of the upper part of fig 1 showing the con- tribution of the levator ani (LA) to the LAM.
Fig. 3.
– Magnification of the lower part of fig. 1 showing the LAM that terminates with fibroelastic septa (asterisks). (azan Mallory staining, original magnification X 2.5).



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