Publications by authors named "D B Cheek"

While the standard of care for anal cancer consists of concurrent chemoradiation, patients with advanced T stages often succumb to local failures. Salvage treatment consists of an abdominoperineal resection (APR). While this is a good surgery to treat the local recurrence, there may be a risk of obtaining a positive margin due to the advanced nature and location of the recurrence.

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Article Synopsis
  • The study investigates whether primary tumor cells can metastasize randomly or require specialized traits by examining 26 colorectal cancer patients with peritoneal metastases.
  • Using a detailed sampling method, the research finds that peritoneal metastases are more heterogeneous than liver metastases and influenced by factors like chemotherapy.
  • The origins of peritoneal metastases are often at the deep-invading edge of primary tumors and generally do not share a common subclonal origin with distant metastases, indicating different selective pressures impacting cancer cells during metastasis.
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Background: Magnetic resonance imaging (MRI) is a non-invasive imaging modality which, in conjunction with biopsies, provide a qualitative assessment of tumor response to treatment. Intravenous injection of contrast agents such as fluorine (F) nanoemulsions labels systemic macrophages, which can, then, be tracked in real time with MRI. This method can provide quantifiable insights into the behavior of tumor-associated macrophages (TAMs) in the tumor microenvironment and macrophage recruitment during therapy.

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Psychotropic medications are typically prescribed in a trial-and-error fashion, and some providers are beginning to utilize pharmacogenetic testing (PGx) as a supplemental prescribing tool in treatment decision making. PGx testing shows potential in enhancing provider insights into personalized prescribing for patients by examining genetic information related to drug metabolism. Literature points to providers' lack of knowledge in PGx interpretation as a main barrier, including psychiatric mental health nurse practitioners (PMHNPs).

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Meeting dose prescription is critical to control tumors in radiation therapy. Interfraction dose variations (IDVs) from the prescribed dose in high dose rate brachytherapy (HDR) would cause the target dose to deviate from the prescription but their clinical effect has not been widely discussed in the literature. Our previous study found that IDVs followed a left-skewed distribution.

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