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Acute gastrointestinal bleeding as the presenting manifestation of prostate cancer
Insights
Prostate cancer can present as gastrointestinal bleeding, sometimes linked to disseminated intravascular coagulation (DIC). Early diagnosis and treatment, including hormone therapy, can effectively manage bleeding and improve patient outcomes.
Area of Science:
- Oncology
- Gastroenterology
- Hematology
Background:
- Gastrointestinal bleeding can be an unusual presenting symptom of advanced cancers.
- Disseminated intravascular coagulation (DIC) is a serious condition that can be associated with malignancy.
- Prostate cancer is not typically considered in patients presenting with gastrointestinal bleeding of unknown origin.
Purpose of the Study:
- To investigate the role of prostate cancer in patients presenting with gastrointestinal bleeding and DIC.
- To highlight the diagnostic utility of prostatic acid phosphatase (PAP) staining in metastatic lesions.
- To evaluate the efficacy of hormonal and radiation therapy in managing bleeding and DIC secondary to prostate cancer.
Main Methods:
- Case series analysis of four patients with gastrointestinal bleeding and no obvious primary prostate cancer.
- Diagnostic confirmation using immunoperoxidase staining for PAP in metastatic foci.
- Treatment assessment based on response to hormone therapy and radiation therapy.
- Monitoring of DIC markers and bleeding episodes during follow-up.
Main Results:
- Prostate cancer was diagnosed in three patients via PAP staining of metastatic sites.
- Two patients with DIC showed dramatic resolution following hormone therapy.
- One patient's bleeding was controlled with radiation therapy.
- Two patients remained alive with no recurrent bleeding at 8 and 18 months post-treatment.
Conclusions:
- Prostate cancer should be considered in the differential diagnosis of patients presenting with bleeding diathesis and adenocarcinoma of unknown primary.
- Immunoperoxidase staining for PAP is valuable for diagnosing metastatic prostate cancer.
- Hormonal therapy offers a potentially effective and prolonged treatment option for managing bleeding and DIC in advanced prostate cancer.
Abstract:
Gastrointestinal bleeding was the presenting manifestation in four patients without readily apparent prostate cancer. Three of these patients had laboratory evidence of acute disseminated intravascular coagulation (DIC) and one patient had a friable rectal mass. The diagnosis of prostate cancer was made in three patients by employing an immunoperoxidase technique for prostatic acid phosphatase in metastatic foci. Dramatic resolution of DIC occurred in two patients following hormone therapy. Radiation therapy was effective in controlling bleeding in another patient. Two patients are alive with no further bleeding episodes at 8 and 18 months follow-up, respectively. In patients who present with a bleeding diathesis and adenocarcinoma of unknown primary, it is important to consider prostate cancer because of its frequent and prolonged responsiveness to hormonal therapy.