Lung Cancer and Multiple Neoplasms: A Retrospective Analysis

Area of Science:

• Oncology
• Epidemiology

Background:

• Cancer survival rates have improved due to advances in treatment and early detection.
• The increasing prevalence of cancer necessitates understanding patterns of multiple malignancies.

Purpose of the Study:

• To determine the frequency of multiple malignancies in hospitalized cancer patients in Poland.
• To analyze the role of lung cancer in patients with multiple primary tumors.

Main Methods:

• Retrospective analysis of medical records of 1112 cancer patients hospitalized between January 2013 and August 2014.
• Inclusion criteria: patients with at least two distinct cancer diagnoses.

Main Results:

• 5.0% of lung cancer patients had multiple malignancies.
• Lung cancer was the most common accompanying malignancy (52 cases).
• Lung cancer was more frequently the second malignancy (39 cases) than the first (11 cases) or third (2 cases).
• Other primary cancers included colorectal, prostate, renal cell, bladder, hematopoietic, and breast cancers.
• Synchronous cancers were diagnosed at an older age compared to metachronous cancers.

Conclusions:

• Multiple malignancies represent a significant proportion of lung cancer cases.
• Lung cancer frequently occurs as a secondary diagnosis in patients with multiple cancers.
• Age at diagnosis differs between synchronous and metachronous multiple cancers.