No abstract available.
Carcinoma, Papillary ; Lung ; Lung Neoplasms ; Multiple Pulmonary Nodules ; Thyroid Gland

When pulmonary nodules are detected in children receiving chemotherapy for osteosarcoma, it is often assumed that they have metastatic disease. However, these pulmonary nodules do not always represent metastatic disease. There are considerable similarities in the computed tomography (CT) images of benign pulmonary nodules and those of malignant nodules. Therefore, we have to be careful when diagnosing pulmonary metastases based on chest CT scan alone. We report a case of benign multiple pulmonary nodules in a patient with osteosarcoma.
Child ; Humans ; Multiple Pulmonary Nodules ; Neoplasm Metastasis ; Osteosarcoma ; Thorax

Myopericytoma is a benign tumor that occurs in soft tissues. Myopericytoma in the lungs is very rare. We report the case of a 63-year-old woman presenting with cavitary masses in the left lung and multiple tiny nodules in both lungs. She underwent surgery, and a histological examination revealed primary pulmonary myopericytoma.
Female ; Humans ; Lung ; Middle Aged ; Multiple Pulmonary Nodules

Lung cancer has the highest mortality rate among all malignant tumors. The key to reducing lung cancer mortality is the accurate diagnosis of pulmonary nodules in early-stage lung cancer. Computer-aided diagnostic techniques are considered to have potential beyond human experts for accurate diagnosis of early pulmonary nodules. The detection and classification of pulmonary nodules based on deep learning technology can continuously improve the accuracy of diagnosis through self-learning, and is an important means to achieve computer-aided diagnosis. First, we systematically introduced the application of two dimension convolutional neural network (2D-CNN), three dimension convolutional neural network (3D-CNN) and faster regions convolutional neural network (Faster R-CNN) techniques in the detection of pulmonary nodules. Then we introduced the application of 2D-CNN, 3D-CNN, multi-stream multi-scale convolutional neural network (MMCNN), deep convolutional generative adversarial networks (DCGAN) and transfer learning technology in classification of pulmonary nodules. Finally, we conducted a comprehensive comparative analysis of different deep learning methods in the detection and classification of pulmonary nodules.
Deep Learning ; Humans ; Multiple Pulmonary Nodules ; Neural Networks, Computer ; Solitary Pulmonary Nodule ; Tomography, X-Ray Computed

Humans ; Multiple Pulmonary Nodules ; Lung ; Lung Neoplasms/surgery* ; Solitary Pulmonary Nodule/surgery* ; Bronchoscopy

A benign metastasizing pulmonary leiomyoma (BMPL) is a rare disease that usually occurs in women with a prior or coincident history of uterine leiomyoma. Although leiomyoma is histologically benign, it has the potential to metastasize to a distant site such as the lung. A 35 year old woman who had undergone a hysterectomy due to uterine leiomyoma 5 years prior was admitted for an investigation of multiple pulmonary nodules on a routine chest roentgenogram. An open lung biopsy was taken to make a pathological diagnosis. The microscopic finding of the nodules was leiomyoma and was similar to those of the uterine leiomyoma that had been resected 5 years ago. The woman underwent wedge resections of all pulmonary nodules. This is the first case of BMPL in Korea, which was treated with wedge resections of all multiple pulmonary nodules.
Adult ; Biopsy ; Diagnosis ; Female ; Humans ; Hysterectomy ; Korea ; Leiomyoma* ; Lung ; Multiple Pulmonary Nodules ; Rare Diseases ; Thorax

Nodular lymphoid hyperplasia (NLH) is a benign lymphoproliferative disease that can affect the lung. Because of its rarity, little is known about the etiology and natural history of NLH. Most cases are usually asymptomatic and found incidentally on imaging studies. Imaging finding of NLH has shown most commonly as a solitary lesion, although multifocal pulmonary nodules may be seen. Surgical resection has proved curative in the cases previously described. We report a rare case of NLH in a 55 year-old man who presented with bilateral multiple pulmonary nodules on chest radiography. Open biopsy was performed from the upper and lower lobe of the left lung. The lesions were pathologically diagnosed as pulmonary NLH. Multifocal residual nodules in both lungs remain stable without spontaneous regression during the 3 years of follow-up.
Biopsy ; Follow-Up Studies ; Hyperplasia* ; Lung* ; Lymphoproliferative Disorders ; Multiple Pulmonary Nodules ; Natural History ; Pseudolymphoma ; Radiography ; Thorax

Pulmonary epithelioid hemangioendothelioma (PEH) is a rare low-grade malignant vascular tumor of minimal clinical expression in young women. Bilateral multiple pulmonary nodules, up to 2 cm in size, are typical CT findings. We describe an atypical case of PEH with a fatal outcome in a 65-year-old male, showing multiple pulmonary nodules with a typical CT halo sign by pulmonary hemorrhage.
Aged ; Fatal Outcome ; Female ; Hemangioendothelioma, Epithelioid* ; Hemorrhage ; Humans ; Lung Neoplasms ; Male ; Multiple Pulmonary Nodules

A benign metastasizing leiomyoma is a rare condition that affects women with a history of uterine leiomyoma, usually after a myomectomy or hysterectomy. Typical radiographic findings include well-circumscribed solitary or multiple pulmonary nodules ranging from a few millimeters to several centimeters in diameter and scattered among the normal interstitium. We report a case of a benign metastasizing leiomyoma that manifested with multiple cavitary nodules in a 46-year-old woman with no previous history of a myomectomy or hysterectomy.
Female ; Humans ; Hysterectomy ; Leiomyoma* ; Lung ; Middle Aged ; Multiple Pulmonary Nodules ; Neoplasm Metastasis ; Uterus

Diffuse pulmonary ossification is rare disease of unknown etiology. Since the first description by Luschka in 1856, about 140 cases have been reported worldwide, but no such case has been reported in Korea yet. We report 40-year-old woman who was diagnosed as diffuse nodular pulmonary ossification on open lung biopsy. She has no respiratory symptoms & physical findings and no previous disease history. She was incidentally found to have multiple pulmonary nodules on roentgenographic examination. Open lung biopsy was done for above lesion and S he was proven to have diffuse nodular pulmonary ossification. She was followed by roentgenographic examination and showed no progression.
Adult ; Biopsy ; Female ; Humans ; Korea ; Lung ; Multiple Pulmonary Nodules ; Rare Diseases