Hello Thanks for the query. Bilateral apical reticular, linear and nodular densities may be suggestive of pulmonary tuberculosis either active or most likely the evidence of past tuberculosis. The activity is to be determined by sputum for acid-fast bacilli and symptomatic evaluation like fever, malaise, weight loss, night sweat. If you have these symptoms or you have positive sputum examination for acid-fast bacilli you then should be treated for tuberculosis. But in most cases these are the evidences of past tuberculosis which is not active now. Consult a pulmonologist and take his opinion and get yourself thoroughly examined. Thank you. Regards Dr Arnab Maji