Mailing Address: Dr.
Marcos Pretto Mosmann. Natal, RN, Brazil, E-mail: moc. Received Feb 21; Accepted Sep 3.
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Abstract Solitary pulmonary nodule corresponds to a common radiographic finding, which is frequently detected incidentally. The investigation of this entity remains complex, since characteristics of benign and malignant processes overlap in the differential diagnosis. Currently, many strategies are available to evaluate solitary pulmonary nodules with the main objective of characterizing benign lesions as best as possible, while avoiding to expose patients to the risks benign cancer stages to invasive methods, besides correctly detecting cases of lung cancer so as the potential curative treatment is not delayed.
This first part of the study focuses on the epidemiology, the morfological evaluation and the benign cancer stages to determine the likelihood of cancer in cases of indeterminate solitary pulmonary nodule.
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Keywords: Solitary pulmonary nodule, Positron-emission tomography, Computed tomography Abstract O nódulo pulmonar solitário corresponde a um achado radiológico comum, cuja detecção ocorre frequentemente de forma incidental. A investigação desta entidade permanece complexa, benign cancer stages vez que existem sobreposições entre as características benign cancer stages processos benignos e malignos no benign cancer stages diagnóstico diferencial.
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Atualmente, muitas estratégias estão disponíveis para a avaliação do nódulo pulmonar solitário, sendo que o objetivo principal consiste em caracterizar da melhor forma possível as alterações benignas, não expondo os pacientes aos riscos de métodos benign cancer stages, e detectar corretamente os casos de câncer de pulmão, não retardando potencial tratamento curativo.
Esta primeira parte do estudo tem como foco apresentar a epidemiologia, revisar a avaliação morfológica e demonstrar métodos para estimar a probabilidade de câncer em nódulo pulmonar solitário indeterminado.
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It is characterized by being completely surrounded by pulmonary parenchyma, and is not associated with atelectasis, lymph node enlargement, pneumonia and pleural effusion 1. The classical definition of indeterminate solitary pulmonary nodule - a potentially malignant lesion - refers to pulmonary nodules that do not meet the typical radiological criteria of benignity 3.
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Approximatelysolitary pulmonary nodules benign benign cancer stages stages detected every year in the United States of America 4. It is estimated that the frequency of solitary pulmonary nodules in Brazil is high, considering the high rates of lung cancer and of infectious diseases. A population study developed in 5 demonstrated the presence of one solitary pulmonary nodule per every chest radiographs 0.
Malignant disease was diagnosed in 2. The prevalence of cancer varies a lot, according to the evaluated population or subgroup 7.
Amongst the main causes one can mention the following: ribs fractures; sclerotic bone lesions; skin lesions hemangiomas, warts, lipomas, neurofibromaselectrodes and nipples 4. There is a range benign cancer stages entities which manifest as solitary pulmonary nodules at chest radiography and CT, extending the possibilities of differential diagnoses, including mainly neoplastic lesions both benign and malignant ; inflammatory lesions infectious and noninfectious ; vascular and congenital lesions Table 1 4.
Table 1 Differential diagnosis of solitary pulmonary nodule Malignant neoplasms.