Revoredo-Rego F y cols. Abordaje laparoscópico de la neoplasia mucinosa apendicular. Rev Argent Cir 2022;114(1):51-57
57
cases had signs of appendiciꢀs (the adjacent adipose 26%12,14. The risk factors for PMP include appendiceal
planes presented inflammatory changes), a common rupture, leakage of mucin into the abdominal
3
,7,10
13
complicaꢀon described in AMNs
.
cavity , presence of neoplasꢀc epithelium, mucin
Surgery is the standard care of LAMN6,10-12. or both outside the appendix , posiꢀve margin,
Appendectomy is safe and curaꢀve in the absence of and elevated preoperaꢀve CEA1 . Predicꢀng which
rupture. Parꢀal resecꢀon of the cecum is indicated if the neoplasms will recur as PMP and which will not,
12
4,15
1
4
LAMN has a broad base and the tumor protrudes into remains a challenge . The opꢀmal treatment of PMP
6
,10,11
. If either cecal wall or ileum are is complete cytoreducꢀon followed by hyperthermic
the cecal lumen
invaded by tumor or adequate surgical margin
6
,10-12
of intraperitoneal chemotherapy (HIPEC), a procedure
1
0
at least 1 cm cannot be secured, ileocecal resecꢀon or with an esꢀmated 2 % mortality and 24 % morbidity
right hemicolectomy may be required . In the cases rate .
reported, the first paꢀent underwent appendectomy,
1
0-12
14
Although there is no consensus regarding
the second paꢀent underwent parꢀal resecꢀon of the the necessary frequency of follow-up of paꢀents with
cecum due to a LAMN with a broad base, and the third LAMN, some authors propose imaging tests and CEA
paꢀent required right segmentary colectomy due to every 6 months for the first 2 years aꢄer surgery, and
inflammaꢀon of the cecum, which raised the suspicion then annually thereaꢄer6. Other authors suggest that
of malignant infiltraꢀon.
in paꢀents with LAMN and absence of risk factors,
The role of laparoscopy is controversial appendectomy would be curaꢀve and does not require
as these neoplasms should be removed avoiding long-term follow-up7 . We follow-up our paꢀents
,14
8
iatrogenic rupture and peritoneal seeding . There are with magneꢀc resonance imaging of the abdomen,
6
,
some reports about laparoscopic approaches to LAMN
colonoscopy and CEA annually for the first 5 years aꢄer
1
0, 11
, with the advantage of allowing exploraꢀon of surgery.
the enꢀre abdominal cavity to rule out extraluminal
disease . Laparoscopy was the approach used in our
three cases, following the recommendaꢀons to reduce Conclusions
the risk of rupture, such as avoiding grasping the
tumor with forceps, use of mesoappendix as anchor
6
Appendiceal mucinous neoplasms are rare
for instrumentaꢀon, of mechanical stapler to secꢀon and without specific clinical presentaꢀon and should
the base of the tumor, and of laparoscopic specimen be considered in the differenꢀal diagnosis of right
retrieval bags. In addiꢀon, the surgeon should be willing lower quadrant pain. The laparoscopic approach is
to convert to an open procedure if there is a possibility a safe and feasible opꢀon. In paꢀents with negaꢀve
1
0, 11
.
of mucin leakage
margins watchful waiꢀng is a valid opꢀon, although
The incidence of PMP during follow-up of the frequency and duraꢀon of surveillance are sꢀll
paꢀents with LAMN is variable, ranging from 5% to controversial.
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1
2
3
.
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