Sclero-Hyalinized Low-Grade Appendiceal Mucinous Neoplasm Clinically Mimicking an Ovarian Mass

Table 1

Reported morphologic appearance of LAMN. Features are extracted from two case series [3, 6].

	Frequency
Gross feature (161 appendices)
Grossly unremarkable	7
Dilated or cystic	116
Thick walled	19
Gross rupture	42
Serosal mucin	40
Diverticular disease	6
Microscopic feature (223 appendices)
Diverticular disease	16
Submucosal fibrosis/lymphoid atrophy	136
Mural hyalinization	21
Calcification	66
Atypical mucinous epithelial cells	All cases