{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Retroperitoneal+Neoplasms",
    "query": {
      "condition": "Retroperitoneal Neoplasms"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 30,
    "total_pages": 3,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Retroperitoneal+Neoplasms&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-05-22T00:08:40.962Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT00416455",
      "title": "Fludeoxyglucose (FDG) F 18 PET Scan, CT Scan, and Ferumoxtran-10 MRI Scan Before Chemotherapy and Radiation Therapy in Finding Lymph Node Metastasis in Patients With Locally Advanced Cervical Cancer or High-Risk Endometrial Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Cervical Adenocarcinoma",
        "Cervical Adenosquamous Cell Carcinoma",
        "Cervical Small Cell Carcinoma",
        "Cervical Squamous Cell Carcinoma",
        "Endometrial Clear Cell Carcinoma",
        "Endometrial Papillary Serous Carcinoma",
        "Stage I Endometrial Carcinoma",
        "Stage IB Cervical Cancer",
        "Stage II Endometrial Carcinoma",
        "Stage IIA Cervical Cancer",
        "Stage IIB Cervical Cancer",
        "Stage III Cervical Cancer",
        "Stage III Endometrial Carcinoma",
        "Stage IVA Cervical Cancer"
      ],
      "interventions": [
        {
          "name": "fludeoxyglucose F 18",
          "type": "RADIATION"
        },
        {
          "name": "positron emission tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "computed tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "ferumoxtran-10",
          "type": "DRUG"
        },
        {
          "name": "magnetic resonance imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "diagnostic lymphadenectomy",
          "type": "PROCEDURE"
        },
        {
          "name": "lymph node biopsy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "RADIATION",
        "PROCEDURE",
        "DRUG"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 384,
      "start_date": "2007-09",
      "completion_date": "2016-07-16",
      "has_results": true,
      "last_update_posted_date": "2019-07-23",
      "last_synced_at": "2026-05-22T00:08:40.962Z",
      "location_count": 24,
      "location_summary": "Los Angeles, California • Sylmar, California • New Britain, Connecticut + 18 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Sylmar",
          "state": "California"
        },
        {
          "city": "New Britain",
          "state": "Connecticut"
        },
        {
          "city": "Sarasota",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00416455"
    },
    {
      "nct_id": "NCT04033081",
      "title": "Registry of Sarcoma Patients Treated With Permanently Implantable LDR CivaSheet®",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Sarcoma"
      ],
      "interventions": [
        {
          "name": "CivaSheet",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "CivaTech Oncology",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 100,
      "start_date": "2020-04-30",
      "completion_date": "2030-04",
      "has_results": false,
      "last_update_posted_date": "2026-03-23",
      "last_synced_at": "2026-05-22T00:08:40.962Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04033081"
    },
    {
      "nct_id": "NCT00751140",
      "title": "Merits of Performing a Modified Template Retroperitoneal Lymph Node Dissection",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cancer of the Urinary Tract"
      ],
      "interventions": [
        {
          "name": "Lymph Node Dissection",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "H. Lee Moffitt Cancer Center and Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 20,
      "start_date": "2008-09",
      "completion_date": "2012-04",
      "has_results": true,
      "last_update_posted_date": "2017-05-30",
      "last_synced_at": "2026-05-22T00:08:40.962Z",
      "location_count": 1,
      "location_summary": "Tampa, Florida",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00751140"
    },
    {
      "nct_id": "NCT00091351",
      "title": "Surgery With or Without Radiation Therapy in Treating Patients With Primary Soft Tissue Sarcoma of the Retroperitoneum or Pelvis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Sarcoma"
      ],
      "interventions": [
        {
          "name": "conventional surgery",
          "type": "PROCEDURE"
        },
        {
          "name": "radiation therapy",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "RADIATION"
      ],
      "sponsor": "Alliance for Clinical Trials in Oncology",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 370,
      "start_date": "2004-08",
      "completion_date": "2006-02",
      "has_results": false,
      "last_update_posted_date": "2016-07-06",
      "last_synced_at": "2026-05-22T00:08:40.962Z",
      "location_count": 55,
      "location_summary": "Little Rock, Arkansas • Duarte, California • Aurora, Colorado + 42 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Duarte",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Gainesville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00091351"
    },
    {
      "nct_id": "NCT06436846",
      "title": "Genomic Risk in Retroperitoneal Sarcoma",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Retroperitoneal Liposarcoma",
        "Soft Tissue Sarcoma"
      ],
      "interventions": [
        {
          "name": "Biospecimen sample collection during standard-of-care surgery",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Fox Chase Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 50,
      "start_date": "2022-03-07",
      "completion_date": "2027-08-01",
      "has_results": false,
      "last_update_posted_date": "2024-05-31",
      "last_synced_at": "2026-05-22T00:08:40.962Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06436846"
    },
    {
      "nct_id": "NCT07117032",
      "title": "Simulation-Free Celiac Plexus Pain Ablation Using Stereotactic Body Radiotherapy (SBRT) in Participants With Cancer-Related Celiac Pain",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Pancreatic Cancer",
        "Retroperitoneal Pain Syndrome"
      ],
      "interventions": [
        {
          "name": "Simulation-free workflow",
          "type": "OTHER"
        },
        {
          "name": "Celiac plexus SBRT",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "OTHER",
        "RADIATION"
      ],
      "sponsor": "Case Comprehensive Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 5,
      "start_date": "2026-05",
      "completion_date": "2027-02",
      "has_results": false,
      "last_update_posted_date": "2026-04-30",
      "last_synced_at": "2026-05-22T00:08:40.962Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07117032"
    },
    {
      "nct_id": "NCT03838718",
      "title": "REtroperitoneal SArcoma Registry: an International Prospective Initiative",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Retroperitoneal Sarcoma"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Fondazione IRCCS Istituto Nazionale dei Tumori, Milano",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2000,
      "start_date": "2016-09-01",
      "completion_date": "2030-12-31",
      "has_results": false,
      "last_update_posted_date": "2019-02-12",
      "last_synced_at": "2026-05-22T00:08:40.962Z",
      "location_count": 6,
      "location_summary": "Los Angeles, California • Jacksonville, Florida • Tampa, Florida + 3 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Emory",
          "state": "Georgia"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03838718"
    },
    {
      "nct_id": "NCT06084780",
      "title": "Intestinal & Multivisceral Transplantation for Unresectable Mucinous Carcinoma Peritonei (TRANSCAPE)",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Secondary Malignant Neoplasm of Retroperitoneum",
        "Secondary Malignant Neoplasm of Peritoneum",
        "Pseudomyxoma Peritonei"
      ],
      "interventions": [
        {
          "name": "Intestinal, Multivisceral or Modified Multivisceral Transplantation",
          "type": "PROCEDURE"
        },
        {
          "name": "Alemtuzumab",
          "type": "DRUG"
        },
        {
          "name": "Tacrolimus",
          "type": "DRUG"
        },
        {
          "name": "Sirolimus",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DRUG"
      ],
      "sponsor": "Case Comprehensive Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 20,
      "start_date": "2026-08",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-04-09",
      "last_synced_at": "2026-05-22T00:08:40.962Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06084780"
    },
    {
      "nct_id": "NCT04420975",
      "title": "Nivolumab and BO-112 Before Surgery for the Treatment of Resectable Soft Tissue Sarcoma",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Leiomyosarcoma",
        "Malignant Peripheral Nerve Sheath Tumor",
        "Myxofibrosarcoma",
        "Pleomorphic Rhabdomyosarcoma",
        "Resectable Dedifferentiated Liposarcoma",
        "Resectable Soft Tissue Sarcoma",
        "Resectable Undifferentiated Pleomorphic Sarcoma",
        "Soft Tissue Fibrosarcoma",
        "Spindle Cell Sarcoma",
        "Stage I Retroperitoneal Sarcoma AJCC (American Joint Committee on Cancer) v8",
        "Stage I Soft Tissue Sarcoma of the Trunk and Extremities AJCC v8",
        "Stage IA Retroperitoneal Sarcoma AJCC v8",
        "Stage IA Soft Tissue Sarcoma of the Trunk and Extremities AJCC v8",
        "Stage IB Retroperitoneal Sarcoma AJCC v8",
        "Stage IB Soft Tissue Sarcoma of the Trunk and Extremities AJCC v8",
        "Stage II Retroperitoneal Sarcoma AJCC v8",
        "Stage II Soft Tissue Sarcoma of the Trunk and Extremities AJCC v8",
        "Stage III Retroperitoneal Sarcoma AJCC v8",
        "Stage III Soft Tissue Sarcoma of the Trunk and Extremities AJCC v8",
        "Stage IIIA Retroperitoneal Sarcoma AJCC v8",
        "Stage IIIA Soft Tissue Sarcoma of the Trunk and Extremities AJCC v8",
        "Stage IIIB Retroperitoneal Sarcoma AJCC v8",
        "Stage IIIB Soft Tissue Sarcoma of the Trunk and Extremities AJCC v8",
        "Storiform-Pleomorphic Malignant Fibrous Histiocytoma",
        "Synovial Sarcoma",
        "Undifferentiated High Grade Pleomorphic Sarcoma of Bone",
        "Undifferentiated Pleomorphic Sarcoma",
        "Undifferentiated Pleomorphic Sarcoma With Osteoclast-Like Giant Cells",
        "Undifferentiated Pleomorphic Sarcoma, Inflammatory Variant",
        "Undifferentiated Spindle Cell Sarcoma"
      ],
      "interventions": [
        {
          "name": "Definitive Surgical Resection",
          "type": "PROCEDURE"
        },
        {
          "name": "Nanoplexed Poly I:C BO-112",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Nivolumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Radiation Therapy",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "BIOLOGICAL",
        "RADIATION"
      ],
      "sponsor": "Jonsson Comprehensive Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 14,
      "start_date": "2020-10-14",
      "completion_date": "2028-01-31",
      "has_results": false,
      "last_update_posted_date": "2026-03-10",
      "last_synced_at": "2026-05-22T00:08:40.962Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04420975"
    },
    {
      "nct_id": "NCT03426865",
      "title": "Role of Axumin PET Scan in Germ Cell Tumor",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Testis Cancer",
        "Germ Cell Tumor",
        "Testicular Cancer",
        "Germ Cell Tumor of Testis",
        "Germ Cell Tumor, Testicular, Childhood",
        "Testicular Neoplasms",
        "Testicular Germ Cell Tumor",
        "Testicular Yolk Sac Tumor",
        "Testicular Choriocarcinoma",
        "Testicular Diseases",
        "Germ Cell Cancer Metastatic",
        "Germ Cell Neoplasm of Retroperitoneum",
        "Germ Cell Cancer, Nos"
      ],
      "interventions": [
        {
          "name": "Axumin PET scan",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Texas Southwestern Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 10,
      "start_date": "2018-03-01",
      "completion_date": "2023-06-01",
      "has_results": false,
      "last_update_posted_date": "2025-08-11",
      "last_synced_at": "2026-05-22T00:08:40.962Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03426865"
    }
  ]
}