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ABDOMEN / GI tract general   44 / F,  Abdominal pain
2018-08-03
About Author
Authors Yedaun Lee
Institution Haeundae Paik Hospital
E-mail chosai@hanmail.net
About Case
Chief complaint
or Title
Abdominal pain
Subspecialty ABDOMEN / GI tract general
Classification Neoplasm, Malignancy / carcinoma
Age 44 Sex F
Difficulty For student, For resident
Modality CT
Case Figures
Click above Figure for more images.
Questions
What is your diagnosis?
Answer
Diagnosis Ruptured appendiceal mucinous neoplasm with pseudomixomy peritonei
Comments

Pathologic diagnosis : low grade mucinous neoplasm

 

Appendiceal mucinous neoplasm

 frequency : 0.1 - 0.4 % of all appendeceomy specimuns

 49% symptomatic : malignant appendiceal mucnious neoplasm more frequently become symptomatic

   - abeominal pain, palpable abdominal mass, abdominal disension, weight loss

Imaging findings

  - round, thin-walled, encapsulated cystic mass

 - comjunicates with cecum

 - content : homogenous, water-soft tissue attenuation (mucin or debris)

 - calcifications of appendiceal wall (~50%)

 

Rupture of mucinous neoplasm cause pseudomyxoma perionei

  - diffuse, gelatinous, cellular ascites

    US : thick gelatinous fluid usually not mobile with maneuver

    CT : mass-effect and distortion of bowel, scalloping of surfaces of solid organ 

References
Keywords Appendix, mucinous neoplasm, pseudomyxoma peritonei
Attachment File -

Number of Applicants : 39
Correct Answer 28
Higashi-Ohmi General Medical Center Akitoshi Inoue
KSAR Dr K
Mallinckrodt Institute of Radiology Naganathan Mani
University of Tokyo Hospital Toshihiro Furuta
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