DOI: 10.12890/2019_001203

A Case of Spontaneous Regression of Pulmonary Small Cell Carcinoma

Authors

  • Motoi Ugajin Department of Respiratory Medicine, Nagoya Tokushukai General Hospital, Japan
  • Hisanori Kani Department of Thoracic Surgery, Nagoya Tokushukai General Hospital, Japan

ugarin2001@yahoo.co.jp

Keywords

Spontaneous regression, pulmonary small cell carcinoma, T lymphocyte-mediated immunity, atrial natriuretic peptide

Abstract

An 82-year-old man was examined using chest computed tomography after treatment for pneumonia. Imaging showed a nodular shadow in the left lower lobe with associated enlarged lymph nodes. A polypoid tumour was observed on bronchoscopic examination, and the histological findings showed pulmonary small cell carcinoma with infiltration of CD3-positive and CD8-positive lymphocytes. The patient declined any antitumoural therapy and experienced an exacerbation of heart failure treated with atrial natriuretic peptide. Eighteen months after the diagnosis, the polypoid tumour had disappeared. T lymphocyte-mediated immunity and the antitumoural effects of atrial natriuretic peptide may have influenced the observed spontaneous regression.

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Published

2019-07-31

Issue

Vol. 6 No. 8 (2019)

How to Cite

1.
Ugajin M, Kani H. A Case of Spontaneous Regression of Pulmonary Small Cell Carcinoma. EJCRIM [Internet]. 2019 Jul. 31 [cited 2026 Nov. 3];6(8). Available from: https://ejcrim.com/index.php/ejcrim/article/view/1203

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