A Case of Pulmonary Hamartoma Showing Rapid Growth

• Published in: Case Reports in Medicine Vol. 2013; no. 2013; pp. 152 - 154-039
• Main Authors: Konno, Hayato, Matsuzaki, Ikuo, Ueki, Shigeharu, Itoga, Masamichi, Sasaki, Toru, Nakazawa, Kenji, Chihara, Mami, Kobayashi, Yoshiki, Takeda, Masahide, Moritoki, Yuki
• Format: Journal Article
• Language: English
• Published: Cairo, Egypt Hindawi Limiteds 01-01-2013; Hindawi Puplishing Corporation; Hindawi Publishing Corporation; Hindawi Limited
• Subjects: Case Report
• ISSN: 1687-9627; 1687-9635
• DOI: 10.1155/2013/231652

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.