A Case of Pulmonary Hamartoma Showing Rapid Growth

A 65-year-old man was admitted for detailed examination of a growing nodular shadow in the left lung. The nodular shadow was initially detected in a routine chest X-ray check-up in March 2012 that warranted regular chest X-ray follow-up. The nodular shadow increased in size from 12 × 15 mm to 15 × 2...

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Bibliographic Details
Main Authors: Masamichi Itoga, Yoshiki Kobayashi, Masahide Takeda, Yuki Moritoki, Mami Tamaki, Kenji Nakazawa, Toru Sasaki, Hayato Konno, Ikuo Matsuzaki, Shigeharu Ueki
Format: Article
Language:English
Published: Wiley 2013-01-01
Series:Case Reports in Medicine
Online Access:http://dx.doi.org/10.1155/2013/231652
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Summary:A 65-year-old man was admitted for detailed examination of a growing nodular shadow in the left lung. The nodular shadow was initially detected in a routine chest X-ray check-up in March 2012 that warranted regular chest X-ray follow-up. The nodular shadow increased in size from 12 × 15 mm to 15 × 20 mm within five months. The calculated tumor doubling time (TDT) in our case was approximately 132.2 days. A malignant tumor was strongly suspected based on the rapid growth, and tumorectomy was thus performed. Cartilaginous tissue accounted for most of the pathological specimen, but a small amount of an epithelial component was observed histologically, and we diagnosed a hamartoma. Hamartoma generally shows slow annual growth, but it is important to recognize that rapid enlargement occurs in some cases.
ISSN:1687-9627
1687-9635