Metachronous Thin-Walled Cavity Lung Cancers Exhibiting Variable Histopathology

Area of Science:

• Pulmonology
• Thoracic Surgery
• Oncology

Background:

• Thin-walled cavities in the lung can be indicative of malignancy.
• Metachronous lung cancers, occurring at different times, pose diagnostic challenges.
• Variable histopathology in synchronous or metachronous lung cancers requires careful evaluation.

Observation:

• A 70-year-old male presented with a right upper lobe thin-walled cavity detected via chest CT.
• Initial surgery revealed squamous cell carcinoma.
• Seven years later, a new left lower lobe thin-walled cavity was found, diagnosed as adenocarcinoma after resection.

Findings:

• The patient developed two distinct primary lung cancers (squamous cell carcinoma and adenocarcinoma) in different lobes over seven years.
• Both tumors presented as thin-walled cavities, emphasizing the need for vigilance.
• Variable histopathology in metachronous lung cancers is possible.

Implications:

• Thin-walled cavities can be indicative of primary lung cancer, necessitating thorough investigation.
• Postoperative surveillance is vital for early detection of metachronous lung cancers.
• Understanding variable histopathology aids in tailored treatment strategies for sequential lung malignancies.