Previous microarray analysis respectively conducted in APC and CTNNB1-mutated intraabdominal DT revealed a great number of miRNAs differently expressed in these two tumor types compared to WT controls, suggesting a deep molecular heterogeneity among them, despite their histological similarity; about 90% of dysregulated miRNAs were present in sporadic DTs and were linked to several biological functions, as cell proliferation and differentiation, response to the inflammatory process and tumor growth [15]. Here, CTNNB1 is linked to neoplasm.