Disseminated intravascular coagulation secondary to advanced prostate cancer: Clinical characteristics, management, and prognosis.

Abstract

355 Background: Although disseminated intravascular coagulation (DIC) is a recognized complication of prostate cancer, little is known about the clinical features and optimal management of these patients. Although anecdotal case studies indicating that the prognosis of prostate cancer associated with DIC might improve with chemotherapy, the clinical data from single case report are far from sufficient for establishment of a standardized treatment strategy. The main objective of this study was to determine the clinical features, treatment and prognosis clinical outcome of patients with prostate cancer complicated by DIC. Methods: We conducted a pooled analysis of 85 prostate cancer patients diagnosed with DIC, two treated in our institution and 83 patients from published literature between January 1976 and June 2017. Results: Eighty-five patients were included in final analysis. The median age was 68 years (range, 44 to 92 years). The majority of patients (98%) has adenocarcinoma. Two (2%) patients with small cell carcinoma. The median of PSA was 614 ng/ml (range: 0.8 – 8138). A Gleason score of 8 or higher was found in 67% of patients. Distant metastasis was reported in 98% of patients. At diagnosis of DIC, the median platelet count was 75 *109 /L (range: 3-205). Regarding the presenting symptoms of DIC, subcutaneous bleeding was reported in 64% of cases; hematuria in 27%. Invasive procedure including prostate biopsy might have been the provoking events of DIC in 25% of the cases. Seventy-one patients received cancer directed therapy including various androgen deprivation, chemotherapy, and novel androgen signaling inhibitor, whereas 13 patients received only best supportive care (BSC). The median overall survival (OS) of the entire cohort of patients was 10 months (95% confidence interval [CI], 5.3-14.7). Significantly prolonged OS was observed in the cancer therapy group, with a median survival of 12 months compared to 2 weeks in the BSC group (p < 0.001, log-rank test). Conclusions: Our analysis showed that patients with prostate cancer complicated by DIC had very poor prognosis, and active cancer therapy might improve OS of these patients.