Spontaneous regression of a carcinoid tumor that required resection owing to its reappearance and subsequent enlargement after 2 years: a case report
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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.
KeywordsLung carcinoid Spontaneous regression Recurrence Thoracoscopic surgery
We would like to thank Editage (http://www.editage.jp) for English language editing.
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.
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Conflict of interest
The authors have no conflicts of interest to disclose.
Written informed consent was obtained from the patient for publication of this article and accompanying images.