Implications of Habitual Alcohol Intake With the Prognostic Significance of Mean Corpuscular Volume in Stage II-III Colorectal Cancer

Significance of preoperative mean corpuscular volume in patients with stage II/III colorectal cancer and anemia

BACKGROUND

Several studies have examined the relationship between mean corpuscular volume (MCV) and prognosis of patients with colorectal cancer (CRC); however, these findings have been inconsistent. This study aimed to investigate the association between the preoperative MCV and recurrence-free survival (RFS) in patients with CRC.

METHODS

We analyzed 1876 patients with stage II/III CRC who underwent R0 resection. The relationships between clinicopathological factors and RFS were investigated using univariate and multivariate analyses. The prognostic significance of the MCV was examined in various clinicopathological contexts. Anemia was defined as Hb < 13 g/dL in men and Hb < 12 g/dL in women.

RESULTS

The mean patient age was 69 ± 11 years. The 5-year RFS rate was 73.3%. Multivariate analysis showed that tumor location, histological grade, stage, serum carcinoembryonic antigen level, carbohydrate antigen 19-9, neutrophil/lymphocyte ratio, and MCV were significant independent risk factors for RFS. Hazard ratios for recurrence were 0.60 for MCV < 80 fL and 1.76 for MCV ≥ 100 fL, compared to MCV 80-100 fL (p < 0.033). The 5-year RFS rates were 83.4% and 58.9%, respectively. This trend was more pronounced in patients with anemia and was contradictory in those without anemia.

CONCLUSION

MCV < 80 fL and ≥ 100 fL can be an indicator of favorable and worse RFS, respectively, in patients with stage II/III CRC and anemia.

Clinical significance of mean corpuscular volume as a prognostic indicator of radiotherapy for locally advanced lung cancer: a retrospective cohort study

Background

Although the prognosis of solid tumors is related to the mean corpuscular volume (MCV), which can roughly predict the prognosis of patients, its correlation with locally advanced lung cancer is still unclear. We evaluated the relationship between serum MCV levels and prognosis in patients before radiotherapy.

Methods

We retrospectively collected the age, sex, smoking history, TNM stage, ECOG score, hematocrit (HCT), MCV, mean corpuscular hemoglobin (MCH), and red blood cell distribution width-standard deviation (RDW-SD) of patients with locally advanced lung cancer who received chest radiotherapy from 2013 to 2017, and analyzed the relationship between this information and the overall survival (OS).

Results

Among all patients, 89 were male (79.5%), 23 were female (20.5%), 46 (41.1%) were older than 65 years, and 66 (58.9%) were younger than 65 years. Seventy-four patients had MCV <93.65 fL, 38 patients had MCV ≥93.65 fL, and the median follow-up period was 24 months. The patients with high T stage, high N stage, and high MCV had lower OS (P<0.05). In the Cox regression analysis, MCV [odds ratio (OR) =0.534, 95% confidence interval (CI): 0.349-0.818, P=0.01], T stage (OR =0.654, 95% CI: 0.440-0.972, P=0.04) and N stage (OR =0.545, 95% CI: 0.371-0.801, P=0.01) were predictors of prognosis.

Conclusions

In the clinical treatment of patients with locally advanced lung cancer, MCV can be used to roughly predict their survival time.

Mean Corpuscular Volume as a Prognostic Factor for Patients With Habitual Alcohol or Tobacco Use After Esophagectomy

BACKGROUND

The goal of this study was to investigate the impact of mean corpuscular volume (MCV) in patients with esophageal squamous cell carcinoma (ESCC) who underwent surgical resection.

METHODS

A total of 615 patients with ESCC who underwent esophagectomy were analyzed. Patients were divided into two groups according to the standard MCV: the high MCV group (>100 fl) and the low MCV group (≤100 fl). Survival analyses were performed to calculate overall survival (OS) and cancer-specific survival (CSS) and investigate the independent prognostic factors.

RESULTS

Fifty-one patients (8.3%) were in the high MCV group, and the other 564 patients (91.7%) were defined as the low MCV group. MCV was significantly correlated with sex, habitual alcohol or tobacco use, tumor length, body mass index, and multiple primary malignancies (P < 0.05). Elevated MCV was significantly correlated with poor survival in univariate and multivariate analyses. However, in subgroup analyses, MCV was found to be correlated with survival only in patients with alcohol or tobacco consumption and not in patients without alcohol or tobacco consumption.

CONCLUSIONS

Pretreatment MCV was correlated with survival in ESCC patients after esophagectomy. However, its prognostic value might only exist in patients with alcohol or tobacco consumption.