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Vol.60 No.3 contents | Japanese/English |
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- Case Report -
A Case of Pulmonary Nodular Lymphoid Hyperplasia That Increased in Size Over a Short Period and Developed a Pleural Tag
Taiki Sunakawa1, Osamu Mishima1, Kenji Misawa1, Yasushi Ono2, Munetake Takada3, Toshiki Ushiyama41Department of Surgery, 2Department of Chemotherapy, 3Department of Respiratory Medicine, 4Department of Health Center, Aizawa Hospital, Japan
Background. Nodular lymphoid hyperplasia (NLH) is a rare benign disease that is classified as a reactive pulmonary lymphoproliferative disorder. Due to a lack of specific imaging features, NLH is difficult to differentiate from lung cancer. We herein report a case in which lung cancer was suspected in a patient with NLH based on the imaging findings. Case. A 61-year-old man was referred to our department due to the detection of a solitary pulmonary nodule of approximately 7 mm in diameter on chest computed tomography (CT). Ten months later, chest CT revealed that the nodule had nearly doubled in volume and showed a pleural tag. Lung cancer was suspected, and a surgical biopsy was performed. It was histopathologically diagnosed as NLH. Conclusion. NLH is a rare benign disease that is difficult to distinguish NLH from lung cancer before surgical biopsy because NLH shows various imaging findings. We presented a case of NLH which grew during short term and showed a pleural tag. It shows a significant CT finding in a case of NLH. The accumulation of further cases is needed in order to improve the diagnosis of NLH.
key words: Pulmonary nodular lymphoid hyperplasia, Lung cancer, Tumor volume doubling time, PET-CT, Pleural tag
Received: October 13, 2019
Accepted: February 17, 2020
JJLC 60 (3): 169-173, 2020
