Synchronous Primary Lung Cancer: An Unusual Triple Presentation

Area of Science:

• Oncology
• Pulmonology
• Pathology

Background:

• Synchronous multiple primary lung cancers (SMPLC) are rare but increasingly diagnosed.
• Early detection and accurate staging are crucial for effective management.

Observation:

• A 75-year-old former smoker presented with progressive fatigue and dyspnea.
• Chest CT revealed three distinct lung lesions in separate lobes.
• Biopsies showed CK7+/TTF-1+/p40- markers, indicative of lung adenocarcinoma.

Findings:

• Multidisciplinary team diagnosed three synchronous primary lung adenocarcinomas.
• Treatment involved right bilobectomy and left lower lobe stereotactic body radiation therapy (SBRT).
• Histological analysis confirmed three distinct primary tumors, not metastases.

Implications:

• This case underscores the diagnostic and therapeutic complexities of SMPLC.
• Successful management of SMPLC can lead to better survival outcomes compared to lung metastases.
• Further research into optimal treatment strategies for SMPLC is warranted.