Exploratory Study of Precise Therapy for Advanced Tumor Patients With Malignant Hydrothorax or Ascites by Using PTC Drug Sensitivity Testing

This study uses a specialized drug sensitivity test on cancer cells collected from fluid build-up in the chest (pleural effusion) or abdomen (ascites) to guide personalized treatment for patients with advanced, incurable cancers. The goal is to identify which drugs will work best for each individual patient. **You may be eligible if...** - You are between 18 and 75 years old - You have an advanced, unresectable cancer confirmed by biopsy - You are able to tolerate anti-cancer treatment without serious heart or lung disease - You have at least one measurable tumor - Standard cancer treatments are no longer working or are not tolerable for you - Your overall health (ECOG score) allows you to carry out self-care activities - Your expected survival is at least 6 months **You may NOT be eligible if...** - You are pregnant or breastfeeding - You are enrolled in another clinical trial - Your nutritional status is significantly compromised Talk to your doctor to see if this trial is right for you.