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Second primary lung cancer

T Antakli1, R F Schaefer, J E Rutherford

  • 1Surgical Service, John L. McClellan Memorial Veterans Hospital, Little Rock, Arkansas 72205.

The Annals of Thoracic Surgery
|April 1, 1995
PubMed
Summary
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This study found that second primary lung cancer (SPLC) occurred in 4.1% of lung cancer resections. Survival rates after SPLC resection were 26% at 3 years and 18% at 5 years.

Area of Science:

  • Pulmonology
  • Oncology
  • Thoracic Surgery

Background:

  • Second primary lung cancer (SPLC) is a significant clinical challenge following initial lung cancer treatment.
  • Understanding the incidence, characteristics, and outcomes of SPLC is crucial for improving patient management.

Purpose of the Study:

  • To review the experience with SPLC at a major veterans medical center.
  • To analyze the incidence, timing, histology, stage, and survival associated with SPLC.

Main Methods:

  • Retrospective review of 1,572 lung cancer resections performed between 1966 and 1993.
  • Identification and analysis of 65 SPLC cases.
  • Comparison of clinicopathological features and survival outcomes for metachronous and synchronous SPLCs.

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Main Results:

  • SPLC was identified in 4.1% of patients undergoing curative lung cancer resections.
  • Metachronous SPLCs accounted for 60% of cases, with a mean interval of 54.6 months from the first tumor.
  • Squamous cell carcinoma was the most common histology (58.4%), and 50.7% of SPLCs had the same histology as the primary tumor.
  • Stage I tumors were prevalent for primary (76%), second (61.1%), and third (72.2%) primary lung cancers.
  • Overall 3- and 5-year survival rates after SPLC resection were 26% and 18%, respectively.
  • Metachronous SPLC had better survival (3-year: 39%; 5-year: 23.4%) than synchronous SPLC (3-year: 12.25%; 5-year: 12.25%).

Conclusions:

  • SPLC is a notable occurrence after primary lung cancer treatment.
  • Early diagnosis, potentially aided by computed tomographic scanning, and surgical resection are important for managing SPLC.
  • Survival outcomes for SPLC vary significantly based on timing (metachronous vs. synchronous) and stage.