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Updated: Jul 28, 2025

A 3D Human Lung Tissue Model for Functional Studies on Mycobacterium tuberculosis Infection
Published on: October 5, 2015
[Pulmonary Tumorlet Associated with Atypical Mycobacterium]
Takato Onda1, Hidefumi Kita, Tsutomu Yoshida
1Department of Thoracic Surgery, Tokorozawa Chuo Hospital, Tokorozawa, Japan.
Abstract:
A 55-year-old woman was referred to our department for further examination for chest abnormal shadow in the right lower lobe. Chest computed tomography (CT) showed two nodules in the right lower lobe and positron emission tomography( PET)-CT showed abnormal accumulation of fluorodeoxyglucose (FDG) only in the main lesion. Because of lung cancer could not be denied, she underwent a partial resection of the right lower lobe. The main lesion was diagnosed as granuloma and the other was tumorlet by pathology. Although pulmonary tumorlet is considered a proliferation of neuroendocrine cells rather than a neoplastic lesion, it is sometimes difficult to distinguish it from a neoplastic lesion because its histologic morphology resembles carcinoid or small cell carcinoma.
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