Presentation
Right iliac fossa pain
Patient Data
A well-circumscribed hypodense lesion with peripheral rim calcification and internal septation was observed in the right iliac fossa, likely originating from the appendix, measuring 5.7 x 4.9 x 6.4 cm (AP x W x CC). No solid component was detected within. There was no definite enhancement or surrounding fat streakiness. Additionally, no enlarged regional mesenteric lymphadenopathy was noted.
There were no other bowel-related masses or abnormal bowel dilatation. Focal liver lesions suggestive of metastasis were not present. Cholelithiasis was noted.
Case Discussion
Features are suggestive of low-grade appendiceal mucinous cystadenoma. The differential diagnosis includes high-grade appendiceal mucinous cystadenocarcinoma or appendiceal mucocele. Histopathological analysis is crucial to obtain the correct diagnosis.
The patient underwent a right hemicolectomy and removal of the right adnexal cyst. The patient was discharged well.
Histopathological examination reveals:
right hemicolectomy: low-grade appendiceal mucinous neoplasm (LAMN)
right fimbrial cyst: benign paratubal cyst
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