Publications by authors named "Marlene C H Hekman"

Purpose: In the Netherlands yearly more than 5000 patients are diagnosed with non-muscle invasive bladder cancer (NMIBC). With a specificity of 88.0% and a negative predictive value (NPV) for high grade NMIBC of 99.

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In this case report we present a 54-year-old female with progressive pain in the left flank. Physical examination showed a non-mobile, painless mass in the left upper abdomen. CT revealed an exceptionally large kidney stone.

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Unlabelled: Based on the high expression of carbonic anhydrase IX (CAIX) in 95% of clear cell renal cell carcinoma (ccRCC), the anti-CAIX monoclonal antibody girentuximab can be used for the detection of ccRCC. This clinical study explores the value of Zr-labeled girentuximab positron emission tomography/computed tomography (PET/CT) imaging in diagnostic challenges regarding ccRCC. PET/CT imaging was performed 4 or 5 d after injection of Zr-girentuximab in patients with a primary renal mass (n=16) or a history of ccRCC (n=14).

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Complete resection of tumor lesions in advanced stage ovarian cancer patients is of utmost importance, since the extent of residual disease after surgery strongly affects survival. Intraoperative imaging may be useful to improve surgery in these patients. Farletuzumab is a humanized IgG1 antibody that specifically recognizes the folate receptor alpha (FRα).

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Context: With more complex kidney tumors treated by nephron-sparing surgery (NSS), complete tumor resection is becoming increasingly challenging. Intraoperative imaging may improve the establishment of negative surgical margins.

Objective: To discuss intraoperative imaging techniques that may help achieve complete tumor resection in NSS of renal tumors.

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Intraoperative dual-modality imaging can help the surgeon distinguish tumor from normal tissue. This technique may prove particularly valuable if small tumors need to be removed that are difficult to detect with the naked eye. The humanized anticarcinoembryonic antigen (anti-CEA) monoclonal antibody, labetuzumab, can be used as a tumor-targeting agent in colorectal cancer, since CEA is overexpressed in approximately 95% of colorectal cancer.

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Article Synopsis
  • The study explores the use of a dual-labeled antibody (girentuximab) for targeted imaging of clear cell renal cell carcinoma (ccRCC) during surgery, combining near-infrared fluorescence and radionuclide imaging.
  • Seven kidney specimens from ccRCC patients were perfused with the dual-labeled antibody, and imaging techniques were used to visualize its accumulation in tumor tissue compared to normal tissue.
  • Results showed significant accumulation of the antibody in ccRCC tissue, supporting the potential for dual-modality imaging as a reliable tool for detecting this cancer during surgical procedures.
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