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pulmonary nodules

Manabu Hoshi, Naoto Oebisu, Tadashi Iwai, Makoto Ieguchi, Yoshitaka Ban, Hiroaki Nakamura
Circumscribed solid nodules are common in pulmonary metastases from sarcoma, but cystic pulmonary metastases from sarcomas are extremely rare. An unusual case of a 33-year-old man presenting with left spontaneous pneumothorax in association with cystic pulmonary metastases from an epithelioid sarcoma in the left forearm was discussed in the present study. The patient underwent wide resection of an epithelioid sarcoma in the left forearm 6 years prior. Periodical computed tomography revealed a gradual increase in the number and size of bilateral multiple cystic pulmonary metastases despite repeated chemotherapy treatment...
April 2018: Oncology Letters
A Skiada, C Lass-Floerl, N Klimko, A Ibrahim, E Roilides, G Petrikkos
The diagnosis and treatment of mucormycosis are challenging. The incidence of the disease seems to be increasing. Hematological malignancies are the most common underlying disease in countries with high income and uncontrolled diabetes in developing countries. Clinical approach to diagnosis lacks sensitivity and specificity. Radiologically, multiple (≥10) nodules and pleural effusion are reportedly associated with pulmonary mucormycosis. Another finding on computerized tomography (CT) scan, which seems to indicate the presence of mucormycosis, is the reverse halo sign...
April 1, 2018: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
Haruhiko Shiiya, Yasuhiro Suzuki, Shigeo Yamazaki, Kichizo Kaga
BACKGROUND: Pulmonary arteriovenous malformations (PAVMs) can be associated with life-threatening complications such as paradoxical embolization, cerebral abscess, and hemothorax. Therefore, all adults with PAVMs should be offered treatment. Percutaneous transcatheter embolization is the first-line treatment, but 5-25% of cases require further treatment due to persistence after embolization. Recently, the role of minimally invasive thoracic surgery as a definitive treatment has been evaluated...
March 12, 2018: Surgical Case Reports
Lori C Sakoda, Louise M Henderson, Tanner J Caverly, Karen J Wernli, Hormuzd A Katki
Purpose of review: Risk prediction models may be useful for facilitating effective and high-quality decision-making at critical steps in the lung cancer screening process. This review provides a current overview of published lung cancer risk prediction models and their applications to lung cancer screening and highlights both challenges and strategies for improving their predictive performance and use in clinical practice. Recent findings: Since the 2011 publication of the National Lung Screening Trial results, numerous prediction models have been proposed to estimate the probability of developing or dying from lung cancer or the probability that a pulmonary nodule is malignant...
December 2017: Current Epidemiology Reports
Rui Hao, Yan Qiang, Xiaofei Yan
The accurate segmentation of pulmonary nodules is an important preprocessing step in computer-aided diagnoses of lung cancers. However, the existing segmentation methods may cause the problem of edge leakage and cannot segment juxta-vascular pulmonary nodules accurately. To address this problem, a novel automatic segmentation method based on an LBF active contour model with information entropy and joint vector is proposed in this paper. Our method extracts the interest area of pulmonary nodules by a standard uptake value (SUV) in Positron Emission Tomography (PET) images, and automatic threshold iteration is used to construct an initial contour roughly...
2018: Computational and Mathematical Methods in Medicine
Melita Kukuljan, Zlatko Kolić, Duje Vukas, David Bonifačić, Kristina Vrbanec
Transthoracic computed tomography-guided core needle biopsy (TTNB) is a well-established method for diagnosing focal pulmonary lesions. However, the dangers associated with this method as well as the significant number of complications caused by it cannot be ignored. Systemic air embolism is a rare but potentially fatal complication that can accompany transthoracic needle biopsies of pulmonary lesions. In this study, we report nonfatal systemic air embolism as a complication of a transthoracic needle core biopsy of a subpleural nodule in the right upper pulmonary lobe of a patient with hemoptysis...
February 2018: Eurasian Journal of Medicine
Po An Chen, Eric P Huang, Lu Yang Shih, En Kuei Tang, Chu Chun Chien, Ming Ting Wu, Fu Zong Wu
RATIONALE AND OBJECTIVES: The main aim of this study was to evaluate the clinical validity and correlation with pathologic invasiveness in the pulmonary adenocarcinoma spectrum based on the novel qualitative computed tomography criterion for subsolid nodule (SSN) classification, which classified SSN into pure ground-glass nodule, heterogeneous ground-glass nodule, and part-solid nodule. In addition, we compared the performance of the conventional and novel classifications. MATERIALS AND METHODS: The computed tomography images of 41 SSN nodules were interpreted by six observers independently, and the SSN characteristics were classified according to both the conventional and the novel classification systems...
March 9, 2018: Academic Radiology
D Yao, L Zhang, P L Wu, X L Gu, Y F Chen, L X Wang, X Y Huang
BACKGROUND: The primary pulmonary lymphoma (PPL), with a low incidence, was highly misdiagnosed in clinic. The present study analyzes the clinical features, laboratory and imaging data, pathologic characteristics, and summarizes misdiagnosis reasons of PPL cases, aims to provide a better understanding and increase the accuracy of early diagnosis and minimize the misdiagnosis of PPL. METHODS: The clinical data of 19 cases were collected from the first affiliated hospital of Wenzhou medical university (PRC) from April 2010 to May 2016...
March 12, 2018: BMC Cancer
Brett W Carter, John P Lichtenberger, Marcelo K Benveniste, Patricia M de Groot, Carol C Wu, Jeremy J Erasmus, Mylene T Truong
Lung cancer remains the leading cause of cancer-related mortality worldwide. To formulate effective treatment strategies and optimize patient outcomes, accurate staging is essential. Lung cancer staging has traditionally relied on a TNM staging system, for which the International Association for the Study of Lung Cancer (IASLC) has recently proposed changes. The revised classification for this eighth edition of the TNM staging system (TNM-8) is based on detailed analysis of a new large international database of lung cancer cases assembled by the IASLC for the purposes of this project...
March 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
Nathan Esplin, Khadija Fergiani, Timothy B Legare, John W Stelzer, Hammad Bhatti, Sayed K Ali
BACKGROUND: Spontaneous regression has been defined as occurring when the malignant tumor mass partially or completely disappears without any treatment or as a result of a therapy considered inadequate to influence systemic neoplastic disease. Recently, studies have implicated immunological responses as likely being involved. We report a case of a patient with squamous cell carcinoma of the lung who experienced spontaneous regression following biopsy without other intervention. CASE PRESENTATION: A 57-year-old white man was referred to our pulmonary clinic after an incidental finding of a nodule in the lower lobe of his left lung...
March 12, 2018: Journal of Medical Case Reports
X-W Wang, W-F Chen, W-J He, Z-M Yang, M Li, L Xiao, Y-Q Hua
AIM: To investigate the differential diagnosis value of preoperative computed tomography (CT) features between pre/minimally invasive and invasive adenocarcinoma in pulmonary mixed ground glass nodules (mGGNs). MATERIALS AND METHODS: The histopathological data and CT images of 146 mGGNs in 141 patients were reviewed retrospectively. Logistic regression analysis and receiver operating characteristic (ROC) curve analysis were performed to identify the CT features differentiating between pre/minimally invasive and invasive adenocarcinoma and to evaluate their accuracy...
March 7, 2018: Clinical Radiology
Yuki Shiina, Yuichi Sakairi, Hironobu Wada, Hajime Tamura, Taiki Fujiwara, Takahiro Nakajima, Hidemi Suzuki, Masako Chiyo, Masayuki Ota, Satoshi Ota, Yukio Nakatani, Ichiro Yoshino
BACKGROUND: Sclerosing pneumocytoma is a rare lung tumor that is usually recognized as a solitary nodule in the lung. Surgical removal is recommended; however, its clinical diagnosis is still an issue because it is difficult to differentiate from lung adenocarcinomas using a tiny sample obtained from biopsy. CASE PRESENTATION: We report a case of pulmonary sclerosing pneumocytoma located in the upper lobe of the right lung of a 34-year-old woman, which was diagnosed before surgery by endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA)...
March 9, 2018: Surgical Case Reports
Jing Gong, Ji-Yu Liu, Li-Jia Wang, Xi-Wen Sun, Bin Zheng, Sheng-Dong Nie
Computer-aided detection (CAD) technology has been developed and demonstrated its potential to assist radiologists in detecting pulmonary nodules especially at an early stage. In this paper, we present a novel scheme for automatic detection of pulmonary nodules in CT images based on a 3D tensor filtering algorithm and local image feature analysis. We first apply a series of preprocessing steps to segment the lung volume and generate the isotropic volumetric CT data. Next, a unique 3D tensor filtering approach and local image feature analysis are used to detect nodule candidates...
February 2018: Physica Medica: PM
Xiaofeng Xu, Feng Gao, Jianjiang Wang, Lan Tao, Jinsong Ye, Li Ding, Wei Ji, Xing Chen
OBJECTIVE: To explore the relationship between miR-122-5p and DUSP4 and their effects on gastric cancer (GC) cell mobility and invasiveness. METHODS: Abnormally expressed miRNAs and mRNAs were analyzed using microarrays. The miR-122-5p and DUSP4 mRNA expression levels in GC tissues and cells were determined by RT-qPCR. The target relationship between miR-122-5p and DUSP4 was validated by dual luciferase reporter assay. GC cell mobility and invasiveness were respectively observed by wound healing assay and transwell invasion assay...
March 6, 2018: Cancer Biology & Therapy
Xizhao Sui, Hui Zhao, Feng Yang, Ganwei Liu, Libao Hu, Chen Chen, Jian Gao, Jun Wang
BACKGROUND: This study aimed to investigate the factors affecting successful microcoil localization for subsequent thoracoscopic resection of pulmonary small nodules and ground-glass nodules. Microcoil has been useful for preoperative localization. Nevertheless, microcoil may dislocate before video-assisted thoracoscopic surgery. METHODS: The medical data of patients with pulmonary solid nodules and ground-glass nodules, who underwent computed tomography-guided microcoil localization before thoracoscopic surgery, were retrospectively reviewed...
April 2018: Journal of Surgical Research
Praveena Nediyara Bhaskaran, Mammen Puliyel, Melissa Myers, Nazha Abughali
BACKGROUND: Infectious mononucleosis is usually a self-limiting illness, but can be rarely associated with complications. CASE CHARACTERISTICS: A 17-year-old boy with Epstein-Barr virus related infectious mononucleosis and cold antibody-mediated autoimmune hemolytic anemia with incidentally noted multiple pulmonary nodules. OBSERVATIONS: Nodules regressed over the next few weeks without specific therapy. MESSAGE: Pediatricians need to be aware of this rare clinical presentation of infectious mononucleosis so that further invasive testing can be avoided...
February 15, 2018: Indian Pediatrics
A Kienlen, C Fernandez, Z Henni-Laleg, M Andre, V Gazaille, N Coolen-Allou
Thoracic endometriosis is a rare entity characterized by presence of endometrial tissue in pleura, lung parenchyma or airways. Most frequent manifestations are catamenial pneumothorax, hemothorax, hemoptysis and pulmonary nodules. We report here a rare case of a woman with thoracic endometriosis who developed iterative pneumothorax and pneumopericardium on bilateral bullous pulmonary dystrophy. She was a 37-year-old woman without any tobacco exposure and with previous history of pleural tuberculosis treated 5 years earlier...
March 1, 2018: Revue de Pneumologie Clinique
X Wang, Y H Xu, Z Y Du, Y J Qian, Z H Xu, R Chen, M H Shi
Objective: This study aims to analyze the relationship among the clinical features, radiologic characteristics and pathological diagnosis in patients with solitary pulmonary nodules, and establish a prediction model for the probability of malignancy. Methods: Clinical data of 372 patients with solitary pulmonary nodules who underwent surgical resection with definite postoperative pathological diagnosis were retrospectively analyzed. In these cases, we collected clinical and radiologic features including gender, age, smoking history, history of tumor, family history of cancer, the location of lesion, ground-glass opacity, maximum diameter, calcification, vessel convergence sign, vacuole sign, pleural indentation, speculation and lobulation...
February 23, 2018: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
Yukiko Komeno, Yasunori Ota, Tomohiko Koibuchi, Yoichi Imai, Kuniko Iihara, Tomiko Ryu
BACKGROUND Syphilis is a sexually transmitted disease caused by the pathogen Treponema pallidum. Prevalence continues to rise, especially among men who have sex with men (MSM). Due to changes in patterns of sexual activity, manifestations of the disease are highly variable. CASE REPORT A 27-year-old male visited the hospital for a low-grade fever and tender 5-cm mass in the right side of his neck. His right tonsil was swollen and covered with a white coating. Levofloxacin was prescribed, but ineffective. The patient's levels of liver function enzymes increased gradually...
March 4, 2018: American Journal of Case Reports
Hongsheng Jin, Zongyao Li, Ruofeng Tong, Lanfen Lin
PURPOSE: The automatic detection of pulmonary nodules using CT scans improves the efficiency of lung cancer diagnosis, and false positive reduction plays a significant role in the detection. In this paper, we focus on the false positive reduction task and propose an effective method for this task. METHODS: We construct a deep 3D residual CNN (convolution neural network) to reduce false positive nodules from candidate nodules. The proposed network is much deeper than the traditional 3D CNNs used in medical image processing...
March 3, 2018: Medical Physics
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