Imaging evaluation of appendicular mucinous neoplasms

Abstract

Introduction. Appendiceal mucinous neoplasms (AMN) (fig. 1) are rare tumors (<1%) with variable malignant potential, with unpredictable biological potential to spread into the peritoneal cavity in the form of gelatinous mucin deposits. Purpose.Analysis of imaging methods in establishing the diagnosis and differential diagnosis of mucinous neoplasms with other forms of appendicular tumors.Material and methods. AMN in most cases are detected occasionally during imaging, endoscopic investigations or during interventions performed with other indications. Ultrasonography and computed tomography being the most useful investigations for this purpose.Results.USG is of first intention, it can identify a cystic mass with different echogenicity. CT is the method of choice for the diagnosis of AMN, can highlight well-circumcised cystic masses, intramural calcifications(in 50%) and can demonstrate the involvement of adjacent organs.Conclusions. USG and CT are useful for the diagnosis of AMN, however the results of the investigations are nonspecific and require differentiation with other intra-abdominal tumor masses.