Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2012 Jun;106(6):900-4.
doi: 10.1016/j.rmed.2012.02.010. Epub 2012 Mar 8.

Hyponatremia as prognostic factor in small cell lung cancer--a retrospective single institution analysis

Andreas Hermes  1 , Benjamin Waschki, Martin Reck
Affiliations
Free article

Hyponatremia as prognostic factor in small cell lung cancer--a retrospective single institution analysis

Andreas Hermes et al. Respir Med. 2012 Jun.
Free article

Abstract

Purpose: The aim of this retrospective study is to present data on clinical significance of hyponatremia in an unselected contemporary patient population with small cell lung cancer (SCLC) with limited disease (LD) and extensive disease (ED).

Patients and methods: Our electronic database was searched for patients with newly diagnosed SCLC from June 2004 to December 2008. 395 cases were identified. We collected data on patient characteristics including clinical performance status, serum sodium values, serum LDH values, metastatic sites, chemotherapy regimens and response, radiotherapy and survival.

Results: Hyponatremia (sodium <135 mmol/l) was present in 18.9% of all cases. Severe hyponatremia (sodium <129 mmol/l) was detected in 8.8%. Hyponatremia was present in 58 out of 241 (24%) patients with ED SCLC and 17 of 154 (11%) patients with LD SCLC. Hyponatremia was associated with significantly shorter median survival (SCLC all patients: 9.0 vs. 13.0 months, p < 0.001, LD SCLC: 9.0 vs. 17.0, p = 0.050, ED SCLC 9.0 vs. 10.0, p = 0.135). After adjustment for age, gender, LDH and performance status hyponatremia was an independent predictor of mortality in patients with ED and LD SCLC.

Conclusion: According to the extensive statistical analyses in our comprehensive unselected patient population, hyponatremia seems to constitute an independent prognostic factor in patients with SCLC.

PubMed Disclaimer