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Beppu N, Niki M, Kimura F, et al. A case of rectal carcinoid, 7 mm in diameter, with skip metastasis to the lateral lymph node. Mol Clin Oncol. 2016;4(4):549-552doi: 10.3892/mco.2016.761.
Beppu, N., Niki, M., Kimura, F., Matsubara, N., Tomita, N., Yanagi, H., & Yamanaka, N. (2016). A case of rectal carcinoid, 7 mm in diameter, with skip metastasis to the lateral lymph node. Molecular and clinical oncology, 4(4), 549-552. https://doi.org/10.3892/mco.2016.761
Beppu, Naohito, et al. "A case of rectal carcinoid, 7 mm in diameter, with skip metastasis to the lateral lymph node." Molecular and clinical oncology vol. 4,4 (2016): 549-552. doi: https://doi.org/10.3892/mco.2016.761
Beppu N, Niki M, Kimura F, Matsubara N, Tomita N, Yanagi H, Yamanaka N. A case of rectal carcinoid, 7 mm in diameter, with skip metastasis to the lateral lymph node. Mol Clin Oncol. 2016 Apr;4(4):549-552. doi: 10.3892/mco.2016.761. Epub 2016 Feb 02. PMID: 27073660; PMCID: PMC4812117.
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Mol Clin Oncol. 2016 Apr;4(4):549-552. doi: 10.3892/mco.2016.761. Epub 2016 Feb 02.

A case of rectal carcinoid, 7 mm in diameter, with skip metastasis to the lateral lymph node.

Molecular and clinical oncology

Naohito Beppu, Masami Niki, Fumihiko Kimura, Nagahide Matsubara, Naohiro Tomita, Hidenori Yanagi, Naoki Yamanaka

Affiliations

  1. Department of Surgery, Meiwa Hospital, Nishinomiya, Hyogo 663-8186, Japan.
  2. Department of Gastroenterology, Niki Clinic, Nishinomiya, Hyogo 663-8245, Japan.
  3. Department of Surgery, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan.

PMID: 27073660 PMCID: PMC4812117 DOI: 10.3892/mco.2016.761

Abstract

The present case study presented a 59-year-old man with a 7 mm submucosal tumor in the lower rectum and swelling in a 7 mm lateral lymph node (the obturator lymph node). No swelling of the lymph nodes within the mesorectum was observed. The patient underwent laparoscopic intersphincteric resection with left side lateral lymphadenectomy. At the pathological examination, the patient was diagnosed with a rectal neuroendocrine tumor (Grade 1; carcinoid), which had invaded the perirectal tissues and exhibited lateral lymph node metastasis; however, mesorectal lymph node metastasis was not observed, therefore, the definitive diagnosis was rectal carcinoid with skip metastasis to the lateral lymph node. No sign of recurrence was observed at the 3 year follow-up. The treatment algorithm of rectal carcinoid was decided by the risk of lymph node metastasis. The present study confirmed skip metastasis to the lateral lymph node from the rectal carcinoid, which is typically very slow growing and has a low grade malignant potential.

Keywords: lateral lymph node; rectal carcinoid; skip metastasis

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