Publications by authors named "Marcus L Frohm"

The incidence of melanoma has increased for decades, and while surgical treatment of early stage disease is often curative, metastatic disease continues to have significant morbidity and mortality and carries a high associated health burden and economic cost. An expanding number of dermatologists are playing a key role in coordinating the care of patients with advanced melanoma, including in the setting of multidisciplinary melanoma clinics, many of which are anchored in dermatology departments. Advances in the understanding of the genetic and immunoregulatory aspects of melanoma development and progression have yielded a wave of novel therapeutics that has made significant impact on the approach to patients with metastatic disease.

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Article Synopsis
  • Basal cell carcinoma (BCC) is the most common type of skin cancer, especially in Caucasians, and typically does not spread widely.
  • A 71-year-old man with a history of skin cancer presented with an alarming left axillary mass, but after a biopsy, it was found that the BCC had spread locally but not necessarily metastasized to distant sites.
  • Follow-up PET scans consistently showed no further disease progression, leading to the conclusion that the tumor is likely a recurrent primary BCC extending to nearby tissues rather than a metastatic cancer.
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Melanoma of the skin is the fifth most common malignancy in the U.S. In 2020, an estimated 6,850 people will die from melanoma of the skin.

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A 4-year-old female child developed cutaneous Langerhans cell histiocytosis 6 months following a diagnosis of T-cell acute lymphoblastic leukemia. Imaging revealed no evidence of systemic disease. Seven months later, the first systemic lesion was discovered on laryngoscopy.

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Hedgehog (Hh) pathway inhibitors such as vismodegib are highly effective for treating basal cell carcinoma (BCC); however, residual tumor cells frequently persist and regenerate the primary tumor upon drug discontinuation. Here, we show that BCCs are organized into two molecularly and functionally distinct compartments. Whereas interior Hh/Notch suprabasal cells undergo apoptosis in response to vismodegib, peripheral Hh/Notch basal cells survive throughout treatment.

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Importance: The use of adjuvant radiation therapy (RT) to the primary site in Merkel cell carcinoma (MCC) is not uncommon. However, the need for adjuvant RT to the primary site in patients at low risk for local recurrence is questionable.

Objectives: To examine the occurrence of true local, satellite, in-transit, regional, and distant recurrences in patients undergoing surgery alone without adjuvant RT to the primary site.

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Background: Wide local excision with 5-mm margins is the standard of care for lentigo maligna (LM). Mohs micrographic surgery (MMS) is used increasingly to treat this tumor.

Objective: To study the authors' experience with these 2 approaches.

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Merkel cell carcinoma (MCC) is a rare malignancy of the skin, and prospective randomized clinical studies on management and treatment are very limited. The NCCN Clinical Practice Guidelines in Oncology (NCCN Guidelines) for MCC provide up-to-date, best evidence-based, and consensus-driven management pathways with the purpose of providing best care and outcomes. Multidisciplinary management with consensus treatment recommendations to individualize patient care within the framework of these guidelines is optimal.

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Background: The incidence of lentigo maligna (LM) may be increasing, but no population-based epidemiologic studies have been performed to our knowledge.

Objective: We sought to determine the incidence of LM in Olmsted County, Minnesota, along with overall and recurrence-free survival.

Methods: Using the Rochester Epidemiology Project, we identified all adult residents of Olmsted County, Minnesota, with a first lifetime diagnosis of LM between 1970 and 2007.

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The genetic alterations contributing to melanoma pathogenesis are incompletely defined, and few independent prognostic features have been identified beyond the clinicopathological characteristics of the primary tumor. We used transcriptome profiling of 46 primary melanomas, 12 melanoma metastases, and 16 normal skin (N) samples to find genes associated with melanoma development and progression. Results were confirmed using immunohistochemistry and real-time PCR and replicated in an independent set of 330 melanomas using AQUA analysis of tissue microarray (TMA).

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Background: Little uniformity exists in the clinical and histologic variables reported with primary Merkel cell carcinoma (MCC).

Objective: To provide a rigorous descriptive analysis of a contemporary cohort and promote the prospective collection of detailed data on MCC for future outcome studies.

Methods And Materials: A detailed descriptive analysis was performed for clinical and histologic features of 147 patients with 150 primary MCC tumors in a prospectively collected database from 2006 to 2010.

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Part II of this continuing medical education article will discuss the treatment options for stage IV melanoma, including novel therapies, such as ipilimumab and vemurafenib; established therapies, including high-dose interleukin-2, conventional chemotherapy, and biochemotherapy; and additional therapies currently under investigation in the form of clinical trials. The approach to patients with brain metastases will be discussed, as will recommendations for distress screening and defining aspects of palliative care.

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The incidence of melanoma has increased for decades, and while surgical treatment of early stage disease is often curative, metastatic disease continues to carry a significantly less promising outlook with high associated health burden and economic cost. An expanding number of dermatologists are playing a key role in coordinating the care of patients with melanoma, including in an increasingly important role among multidisciplinary melanoma clinics, many of which are anchored in dermatology departments. Advances in the understanding of the genetic and immunoregulatory aspects of melanoma development and progression have yielded a wave of novel therapeutics that has made significant impact on the approach to patients with metastatic disease.

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Background: People with cancer are increasingly turning to the Internet for health-related information.

Objective: To compare the patterns of Internet use of people with skin cancer with previous findings by including people with nonmelanoma skin cancer (NMSC) using a comprehensive survey. To evaluate perceived anxiety levels and overall satisfaction after searching the Internet of people with skin cancer.

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