Hello dear, thanks for your question on HCM. The x rray description, you have provided, is suggestive of active, infectious tuberculosis. Tuberculosis commonly affect upper lobes. Lesions like infiltration, nodules and less fibrosis favours active lesion. So get done sputum for AFB as soon as possible and start the treatment according to weight. Pulmonary tuberculosis is infectious disease. I spreads by droplet infection. Due to coughing, sneezing and deep breathing these droplets are generated and discharged in atmosphere. From her they can Infect normal healthy individual. So ask her to wear mask and avoid coughing in public places. Her son will need Isoniazid prophylaxis to prevent infection.