Appendix cancer other imaging findings

Positron emission tomography (PET) and scintigraphy are among other imaging modalities that may be helpful in the diagnosis and management of appendix cancer.

• The followings are among other imaging modalities that may be helpful in the diagnosis and management of appendix cancer:

• Somatostatin scintigraphy with 111-indium-octreotide^[1]

• High sensitivity and specificity for both functioning and non-functioning carcinoid tumors
• Most sensitive imaging method to evaluate extrahepatic metastases
• Useful in treatment planning
• Indicates response to octreotide analogues

• Bone scintigraphy with 99mTc-methylene diphosphonate (99mTcMDP)^[2]
• MIBG scintigraphy ^[2]

• Distinguish between primary and metastatic tumors
• Detecting carcinoid tumors that are negative on OctreoScan

• Positron emission tomography (PET):
  • PET–CT scan will show high uptake in the metastasis points as well residual tumor and/or peritoneal carcinomatosis.
  • Figure below demonstrates post-operative PET-CT scan of a patient with carcinoid tumor.^[3]

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