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Cutaneous Metastase of Rectal Neuroendocrine Carcinoma Revealed on 18F-FDG PET/CT


  • Ömer Faruk Şahin
  • Rahime Şahin
  • Mehmet Can Baloğlu
  • Tevfik Fikret Çermik
  • Nurhan Ergül

Received Date: 09.08.2022 Accepted Date: 04.10.2022 Mol Imaging Radionucl Ther 2023;32(2):153-155 PMID: 37337847

Rectal neuroendocrine carcinomas constitute <1% of all neuroendocrine carcinomas and <1% of all gastrointestinal tract malignancies. Cutaneous metastases of rectal neuroendocrine carcinoma are rarer than visceral metastases. We represent a 71-year-old man who was diagnosed with neuroendocrine tumor grade 3 originating from the rectum 1 year ago. He was referred for 18F-fluorodeoxyglucose (FDG) positron emission tomography/computed tomography for restaging after 6 cycles of chemotherapy and radiotherapy. Intensely increased 18F-FDG uptake in the right cutaneous inguinal region was consistent with neuroendocrine carcinoma metastasis with biopsy from the same region.

Keywords: 18F-FDG-PET, rectal neuroendocrine carcinoma, cutaneous metastasis


Informed Consent: The patient consent was obtained.

Peer-review: Externally peer-reviewed.

Authorship Contributions

Surgical and Medical Practices: Ö.M.Ş., R.Ş., M.C.B., T.F.Ç., N.E., Concept: Ö.M.Ş., R.Ş., M.C.B., T.F.Ç., N.E., Design: Ö.M.Ş., R.Ş., M.C.B., T.F.Ç., N.E., Data Collection or Processing: Ö.M.Ş., R.Ş., M.C.B., T.F.Ç., N.E., Analysis or Interpretation: Ö.M.Ş., R.Ş., M.C.B., T.F.Ç., N.E., Literature Search: Ö.M.Ş., R.Ş., M.C.B., T.F.Ç., N.E., Writing: Ö.M.Ş., R.Ş., M.C.B., T.F.Ç., N.E.

Conflict of Interest: No conflict of interest was declare by the authors.

Financial Disclosure: The authors declared that this study received no financial support.


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