International Cancer Conference Journal

, Volume 8, Issue 2, pp 58–60 | Cite as

Spontaneous regression of a carcinoid tumor that required resection owing to its reappearance and subsequent enlargement after 2 years: a case report

  • Tsuyoshi UchidaEmail author
  • Hirochika Matsubara
  • Aya Sugimura
  • Hiroyasu Matsuoka
  • Tomofumi Ichihara
  • Hiroyuki Nakajima
Case report


We present a rare case of spontaneous regression in a typical lung carcinoid. A 20-year-old woman with an abnormal shadow on a chest radiograph was admitted to our hospital. Computed tomography revealed a smooth nodule in the left S1 + 2 segment. At the 6-month follow-up, the nodule had regressed without treatment. At the 2-year follow-up, the tumor reappeared in the same place as before. We performed left upper lobectomy via 4-port thoracoscopic surgery. A pathological examination revealed a typical carcinoid. Lung carcinoids can spontaneously regress; long-term follow-up is important for timely detection of tumor reappearance.


Lung carcinoid Spontaneous regression Recurrence Thoracoscopic surgery 



Computed tomography


Spontaneous regression



We would like to thank Editage ( for English language editing.

Author contributions

HM: drafted and revised the manuscript. AS: revised the manuscript. HM: revised the manuscript. TI: revised the manuscript. HN: revised the manuscript.


The authors did not receive any funding for this report.

Compliance with ethical standards

Conflict of interest

The authors have no conflicts of interest to disclose.

Informed consent

Written informed consent was obtained from the patient for publication of this article and accompanying images.


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Copyright information

© The Japan Society of Clinical Oncology 2019

Authors and Affiliations

  1. 1.Department of General Thoracic SurgeryYamanashi UniversityYamanashiJapan

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