A CLINICO.PATHOLOGICAL STUDY OF ANAL FISTULAE

Anal Fbtnh
R*tw olLiteratrre
2-Tumors that occur in association with an anal fistula which are
usually slowly growing (GetL et aL, I9EI),
In some of these cases there is tumor situated proximally in the rectum
and it has been suggested that tumor cells may be sEeded into the fistula
(Dukes and Gafivln, 1956).
The pathology may be colloid or adenoearcinoma. In other cases
malignant .changes in congenital reduplication and some epidermoid
carcinomas arise from anal gland (Lee etaL,l9ilI, Zarcn et aL, 1983) the
pathology may be squamous or basal cell carcinoma.
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3. Rare tumor$ which are associated with hidradenitis suppwativa and
arise from apocine glands (Thornon and Ahcafian, 1978). Other
malignant tumors may be associated with anorectal sepsis they
include carciniods (Grace et aI, IhEZ) and primary lymphoma of
anorectum (Steele et aL, 1995).
2- Post irradf$atio nerineal ftstulae.
There should be perineal wound plus pelvic inadiation these perineal
fistulae arc conrmon with sphincter preserving $urgery tluough perineal
route rather than transabdominal approaches to extra rectal neoplasms
(Saclarides, 1997).
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l-Anal disorders.
A- Hidradenitisuunqrativa:
may present in anal canal as fistulae, they are usually submucous or
subcutaneous due to obstructed, infected apocrine glands. The term
pyodermal fistulans is used to deseribe this entity.
B-Aselfi$Eu{s
may be complicated by short superficial fistulae running from base of
fissur to hyperrophied anal papilla fftasctr*e,.1964). They are almost
always midline representing 7% of anorectal fistulae (Marhs and
Ritchte,I977),
C- Haemorrhoids
Sepsis cornplicating a thombosed perianal venous plexus may result
in subcutaneous or submucous fisfulee.
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