PMC9574767_01
a demonstrates the initial 8 cm right upper lobe mass (yellow arrow). Fig. 1b (yellow arrowhead) demonstrates the repeat scan 3 years later with new consolidative changes in the right lower lobe leading to a diagnosis of MAC. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
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CT (Fig. 1a). Cytology from bronchial brushing was positive for squamous cell carcinoma. Three years later, chest CT showed areas of nodularity within the right upper lung zone as well as increasing nodularity and consolidative changes within the right lower lobe (Fig. 1b).
PMC9574767_02
a demonstrates right upper lung opacity with areas of cavitation and bronchiectasis as well as areas of tree-in-bud nodularity (arrow). Fig. 2b demonstrates opacity in the lateral basilar segment of the left lower lobe (yellow arrowhead). (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
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Three years later CT acquired for persistent cough demonstrated a stable right upper lung opacity with areas of cavitation and bronchiectasis as well as areas of tree-in-bud nodularity (Fig. 2a). Two years later a repeat CT scan demonstrated increase in opacity in the lateral basilar segment of the left lower lobe (Fig. 2b).
PMC9574767_03
a demonstrates focal opacity in the left lower lobe anteriorly (yellow arrow). Fig. 3b demonstrates a new partially cavitary lesion in the right upper lobe (yellow arrowhead). (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
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Initial CT scan acquired for chronic cough demonstrated multiple predominately small nodular densities and a more focal opacity in the left lower lobe anteriorly (Fig. 3a). Repeat CT scan approximately a year later revealed a new pulmonary nodule (Fig. 3b).
PMC9574767_04
a demonstrates extensive emphysematous changes throughout the bilateral lungs and a thick-walled cavitation of the left lung (yellow arrow). Fig. 4b is a CT scan obtained three years later demonstrating collapse of the left upper lobe with areas of necrosis (yellow arrowhead). (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
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COPD treated with albuterol, tiotropium, and fluticasone, and former tobacco use with 108 pack years history of smoking presented with dyspnea on exertion, sputum productive of green phlegm and periodic hemoptysis. CT scan of the lung showed a thick-walled cavitary lesion in the right upper lobe (Fig. 4a) with surrounding nodularities and associated bronchiectasis. Repeat CT of the lung revealed collapse of the left lower lobe with associated cavitation (Fig. 4b) and bronchoscopic biopsy of the left upper lung demonstrated lung adenocarcinoma.
PMC9574767_05
a demonstrates a spiculated subpleural nodule in the right upper lobe (yellow arrow). Fig. 5b demonstrates ground glass attenuation in the posterior basal segment of the left lower lobe on the same CT scan (yellow arrowhead). Fig. 5c demonstrates increased pleural-based soft tissue density on a repeat CT scan 1 year later (yellow diamond). (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
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84-year-old white woman with a past medical history of hyperlipidemia, melanoma in situ and former tobacco use with 10 pack years history of smoking presented with a pleural based 1.4 cm nodule in the right upper lobe noted as an incidental finding (Fig. 5a). Additionally, bronchiectatic changes and ground glass attenuation were noted in the posterior basal segment of the left lower lobe (Fig. 5b). CT scan in 1 year was recommended. CT scan a year later demonstrated that the previously described pleural based right upper lobe nodule had increased in size (Fig. 5c).
PMC9574767_06
a demonstrates a mass like consolidation with indistinct and irregular borders in the left upper lobe (yellow arrow). (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
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However, surveillance CT six years demonstrated a partially pleural based mass like consolidation with indistinct and irregular boarders in the left upper lobe with associated volume loss (Fig. 6a).