Publications by authors named "Kristen B Pytynia"

Importance: Extranodal extension (pENE) is a critical prognostic factor in oropharyngeal cancer (OPC) that drives therapeutic disposition. Determination of pENE from radiological imaging has been associated with high inter-observer variability. However, the impact of clinician specialty on human observer performance of imaging-detected extranodal extension (iENE) remains poorly understood.

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Purpose: Salivary gland carcinomas (SGCs) are pathologically classified into several widely diverse subtypes, of which adenoid cystic carcinoma (ACC), mucoepidermoid carcinoma (MEC), and salivary duct carcinoma (SDC) are the most commonly encountered. A comparative genetic analysis of these subtypes provides detailed information on the genetic alterations that are associated with their tumorigenesis and may lead to the identification of biomarkers to guide tumor-specific clinical trials.

Experimental Design: Whole-genome sequencing of 58 common SGCs (20 ACCs, 20 SDCs, and 18 MECs) was performed to catalog structural variations, copy number, rearrangements, and driver mutations.

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We report a case of a 77-year-old female with purulent chondritis of the thyroid cartilage who was initially referred for laryngeal neoplasm. Purulent chondritis of the laryngeal cartilage is a rare entity with three reports in the literature. The unique CT imaging features of expansile laryngeal cartilage with peripheral rim enhancement and central fluid-attenuation correlate to the abscess formation between the inner and outer perichondria.

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Acinic cell carcinoma (AcCC) is a morphologically distinctive salivary gland malignancy often associated with chromosome rearrangements leading to overexpression of the NR4A3 transcription factor. However, little is known about how NR4A3 contributes to AcCC biology. Detailed RNA-sequencing of 21 archived AcCC samples revealed fusion reads arising from recurrent t(4;9), t(9;12), t(8;9) or t(2;4) chromosomal translocations, which positioned highly active enhancers adjacent to the promoter of the gene or the closely related gene, resulting in their aberrant overexpression.

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Background: COVID-19 pandemic has strained human and material resources around the world. Practices in surgical oncology had to change in response to these resource limitations, triaging based on acuity, expected oncologic outcomes, availability of supportive resources, and safety of health care personnel.

Methods: The MD Anderson Head and Neck Surgery Treatment Guidelines Consortium devised the following to provide guidance on triaging head and neck cancer (HNC) surgeries based on multidisciplinary consensus.

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Background: This study reports long-term head and neck cancer (HNC) patient-reported symptoms using the MD Anderson Symptom Inventory Head and Neck Cancer Module (MDASI-HN) in a large cohort of HNC survivors.

Methods: MDASI-HN results were prospectively collected from an institutional survivorship database. Associations with clinicopathologic data were analyzed using χ , Mann-Whitney, and univariate regression.

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Purpose: To determine the expression of glucocorticoid receptor (GR) and androgen receptor (AR) in salivary duct carcinoma (SDC) and to analyze the role of these proteins in the development and management of this disease entity.

Experimental Design: We performed a phenotypic assessment of GR and AR localization and expression, and determined their association with clinicopathologic factors in 67 primary SDCs. functional and response analysis of SDC cell lines was also performed.

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We report a rare case of Cushing's syndrome in a 59-year-old man who initially presented with concurrent acinic cell carcinoma of the parotid with high-grade transformation and co-existing papillary and medullary thyroid carcinomas, without noticeable cushinoid symptoms. Six-months later, he developed clinical features of Cushing's syndrome which coincided with disease progression in the form of lung metastasis and mediastinal lymphadenopathy. Ectopic adrenocorticotropic hormone (ACTH) production and protein expression was limited to the high-grade transformed component of acinic cell carcinoma and in the lymph node metastasis, and was absent in the conventional acinic cell carcinoma as well as in the papillary and medullary thyroid carcinoma.

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Background: Patients with advanced primary and recurrent salivary duct carcinoma (SDC), a rare and lethal malignancy, have limited therapeutic options. Novel small-molecule agents aimed at targeting critical signaling associated with SDC tumorigenesis may lead to new therapeutic options for patients with these tumors. The human epidermal growth factor receptor 2 (HER2)/phosphoinositide 3-kinase (PI3K) axis, an important oncogenic pathway, has been targeted for therapy in several solid tumors.

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Basal cell salivary neoplasms display similar cyto-morphologic features and are classified into adenoma and adenocarcinoma based on the presence or absence of tumor invasion at diagnosis. These neoplasms also share considerable phenotypic resemblance and co-exist with certain dermal adnexal tumors harboring the CYLD gene mutations inferring common genetic association. We sequenced the CYLD gene in both basal cell adenomas and adenocarcinomas and correlated the findings with CYLD, NF-κB, and β-catenin expression levels and clinicopathologic factors.

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We report the development of mucoepidermoid carcinomas of the parotid gland in 2 adult patients after a relatively short duration of radioactive iodine (RAI) treatment of papillary thyroid carcinoma. Both instances, together with those previously reported, underscore the selective nature of the mucoepidermoid carcinoma phenotype development in patients with papillary thyroid carcinoma as a consequence of RAI treatment. Efforts to alleviate salivary pathophysiologic damage by RAI in these patients are warranted.

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The peer review process for scientific journals relies on the efforts of volunteer reviewers. Reviewers are selected due to their expertise in their fields. With so many demands on professional time, the benefits of participating in peer review may not be obvious.

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Methylene blue has been safely used for the localization of parathyroid glands during parathyroidectomy, and only a few adverse effects have been documented. Methylene blue administration as a cause of pulse-oximetry-related skin injury is extremely rare. We describe 2 such cases in patients who developed a blister on the second digit at the pulse oximetry site after an uncomplicated excision of a parathyroid adenoma.

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Squamous cell carcinoma of the oropharynx is increasing in incidence in epidemic proportion. This site specific increase in incidence is due to an increase in human papillomavirus (HPV)-related squamous cell carcinoma, while the incidence of tobacco related squamous cell carcinoma is decreasing. In particular, the incidence of HPV-related oropharyngeal squamous cell carcinoma (OPSCC) is increased among middle aged white men, and sexual behavior is a risk factor.

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Although Mohs micrographic surgery is the standard of care for large, aggressive or recurrent non-melanoma skin cancers of the head and neck, tumours that involve deep underlying structures (including bone, parotid gland and named nerves) are impractical for extirpation under local anaesthesia. Such cases are often referred to a head and neck surgeon, who typically relies on intraoperative frozen section analysis of the peripheral cutaneous margin. Here we describe the use of the Mohs moat technique as part of a collaborative approach for the treatment of aggressive and deeply invasive basal cell carcinoma that allows an analysis of the complete peripheral cutaneous margin and results in decreased operating room and general anaesthesia time.

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Background: Oral cancer in the form of squamous cell carcinoma (OSCC) is typically detected in advanced stages when treatment is complex and may not be curative. The need for surgical biopsy may contribute to delays in diagnosis and impede early detection. Multiple studies of RNA from surgically obtained tumor samples have revealed many genes differentially expressed with this disease.

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RNA expression analysis of oral keratinocytes can be used to detect early oral cancer, but a limitation is the inability to obtain high quality RNA from oral tissue without using biopsies. While oral cytology cell samples can be obtained from patients in a minimally invasive manner, they have not been validated for quantitative analysis of RNA expression. Earlier we showed RNA from brush cytology of hamster Oral Squamous Cell Carcinoma (OSCC) demonstrated differential expression of B2M and CYP1B1 using real time RT-PCR in a dibenz[a,I]pyrene, tobacco carcinogen, induced model of this disease.

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It is unknown whether population-level racial or ethnic disparities in mortality from squamous cell carcinoma of the head and neck (SCCHN) also occur in the setting of standardized multidisciplinary-team directed care. Therefore, we conducted a matched-pair study that controlled for several potentially confounding prognostic variables to assess whether a difference in survival exists for African American or Hispanic American compared with non-Hispanic white American SCCHN patients receiving similar care. Matched pairs were 81 African American case and 81 non-Hispanic white control patients and 100 Hispanic American cases and 100 matched non-Hispanic white controls selected from 1,833 patients of a prospective epidemiologic study of incident SCCHN within a single, large multidisciplinary cancer center.

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Background: The authors examined whether the preoperative serum concentrations of cotinine accurately predict the risk of complications in patients undergoing flap reconstruction of head and neck cancer defects.

Methods: Patients with incident stage III or IV squamous cell carcinoma of the head and neck undergoing resection with pedicled or free flap reconstruction were selected from an existing database of 500 patients with squamous cell carcinoma of the head and neck who participated in a prospective epidemiologic study and were reviewed retrospectively. Preoperative serum cotinine concentrations were determined using a competitive microplate immunoassay.

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Historically treatment of head and neck cancers involved surgical resection followed by radiation therapy for advanced tumors. Concurrent chemoradiation therapies have shown equal survival to surgical resection with better preservation of function. However, concurrent therapy does entail significant morbidity, and recent advances have been used to minimize that morbidity.

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Both environmental and occupational exposures are associated with the development of carcinomas of the upper aerodigestive tract, although most squamous cell carcinomas of the upper aerodigestive tract are related to smoking and drinking. This review discusses environmental and occupational risk factors, other than tobacco and alcohol, for carcinoma of the upper aerodigestive tract and the difficulties encountered when attempts are made to study these environmental and occupational exposures. However, this is not an all-inclusive review; rather, it is designed to give the reader an understanding of the topic, to allow for appropriate counseling of patients, and perhaps to advance public health initiatives.

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The past two decades have witnessed a paradigm shift in the treatment of squamous cell carcinoma of the head and neck. Innovation in chemotherapy, radiotherapy and surgery has led to the assimilation of these modalities into our treatment algorithms. This modern multipart treatment plan has led to improved survival; however, this has come at the cost of increased toxicity.

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Purpose: To compare survival rates between patients with squamous cell carcinoma of the head and neck (SCCHN) without a history of smoking (never smokers) and those with a current or previous history of smoking (ever smokers).

Patients And Methods: Fifty never smokers with newly diagnosed SCCHN were matched to 50 ever smokers according to sex, age, tumor site, overall stage, nodal stage, and treatment. Survival analysis was performed using Kaplan-Meier estimates.

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