PURPOSE: To describe the MRI findings in the bronchial anthracofibrosis mimicking lung cancer on CT examination. MATERIALS AND METHODS: Ten patients, who showed CT findings mimicking lung cancer, were selected among fifty patients of bronchial anthracofibrosis proven by bronchoscopic biopsy, consisting of two men and eight women, ranging in age from 58 to 79 years old (average age, 68 years old). CT scan and MRI were performed in all patients(n=10). Percutaneous lung biopsy on mass was performed in one patient. MRI findings were analyzed with the emphasis on the signal intensity of the mass (n=4), collapsed lung (n=4) and lymph node (n=10) on axial T1 and T2-weighted images by two radiologists in consensus. No contrast enhancement was used in all cases. RESULTS: CT scan revealed mass(n=4), atelectasis with obstructive pneumonia(n=4) and bronchial wall thickening(n=2). All patients showed enlarged medistinal lymph nodes(n=10). The mass showed low signal intensity on T1WI and T2WI (n=4). The collapsed lung in patients with atelectasis indicated intermediate signal intensity on T1WI and low signal intensity on T2WI (n=4). Nine patients showed low signal intensity of lymph node on T1WI and T2WI, except one patient who showed central high signal intensity with peripheral rim of low signal intensity in right lower paratracheal lymph node on T2WI. CONCLUSION: Low signal intensity of a mass, collapsed lung, and lymph nodes on T2WI in anthracofibrosis patients may be helpful in differentiation of the lesion from lung cancer.
Aged ; Biopsy ; Consensus ; Female ; Humans ; Lung Neoplasms* ; Lung* ; Lymph Nodes ; Magnetic Resonance Imaging* ; Male ; Pulmonary Atelectasis ; Tomography, X-Ray Computed

PURPOSE: To evaluate the CT and MRI findings of neurosyphilis. MATERIALS AND METHODS: We retrospectivelyreviewed the CT and MR imaging findings in five patients with intracranial neurosyphilis confirmed by CSF, VDRL,TPHA, and clinical follow-up. MR imaging was performed in all five cases, and CT in two. RESULTS: The MRI and CTfindings of intracranial neurosyphilis included infarction (n=3), focal inflammation (n=1) and encephalopathy(n=1). There was a total of ten infaretions : three of the basal ganglia, two each of the frontal lobe, watershedzone, and cerebellum, and one of the occipital lobe. Intaretion was most common in MCA territory (n=9; 50%),followed by the watershed zone (16.6%), posterior cerebral artery territory (16.6%), and posterior inferiorcerebellar artery territory (11.1%), The size of the lesion varied from 1cm to larger than one lobe. One patientshowed diffuse high signal intensity in the left temporal lobe, but on follow-up MRI, this had resolved. CONCLUSION: The most common finding of neurosyphilis, as seen on MRI and CT, was infarction in middle cerebralarterial territory.
Arteries ; Basal Ganglia ; Cerebellum ; Follow-Up Studies ; Frontal Lobe ; Humans ; Infarction ; Inflammation ; Magnetic Resonance Imaging* ; Neurosyphilis* ; Occipital Lobe ; Posterior Cerebral Artery ; Syphilis ; Temporal Lobe