Unusual case of intraluminal cecal recurrence of a low grade appendiceal mucinous neoplasm (LAMN)—Case report and brief literature review

Abstract

HighlightsPenetration of the visceral peritoneum by a mucinous neoplasm consists the cardinal point in the management and prognosis.Patients with LAMN confined to the muscularis propria after histologic examination of the entire appendix (pTis) have essentially no risk of recurrence.There are no clear guidelines regarding appropriate management of appendiceal LAMNs with positive margins, especially when confined within the serosa.A simple cecectomy is traditionally suggested by some authors, but according to more recent data its necessity is debated.LAMN may rarely recur in the form of a polypoid protrusion into the cecal lumen and this may originate from the buried stump of the appendix on the ground of a positive margin.

Incidental diagnosis of a low-grade mucinous appendicular neoplasm: A case report

“…The surgical margins were negative and we considered not to perform a right hemicolectomy. In the LAMN cases where the tumor is localized, many publications are agreed that simple appendectomy is sufficient to be curative [ 2 , 5 , [9] , [10] , [11] ], but there are still no guidelines about the appropriate management when the surgical specimen has positive surgical margins [ 2 , 3 , 12 ]. During our review we found a case report of Givalos, N. et al affirming that there are reports of experts suggesting a cecectomy in mucinous neoplasms with positive margins with negative lymph nodes [ 12 ].…”