|Poll|February 5, 2016 (Updated: February 22, 2021)

Patient Presents With Buttock Lesion

A 59-year-old woman presents with a purplish lesion on her left buttock, and a biopsy is performed. What is your diagnosis?

A 59-year-old woman presents with a purplish lesion on her left buttock, and a biopsy is performed.

What is your diagnosis?

Stay up to date on recent advances in the multidisciplinary approach to cancer.

Subscribe Now!

Latest CME

Video

Inaugural Brain & Spine Metastases Conference: Evolving Practice and Emerging Therapies

Manmeet Ahluwalia, MD, MBA

Video

Community Oncology Connections™: Beyond Primary End Points—Digging Into Randomized and Real-World Data to Guide Challenging Treatment Decisions in HR+/HER2− Metastatic Breast Cancer | Indiana Oncology Society

Shaina Rozell, MD, MPH; Seth A. Wander, MD, PhD

Video

The 2nd Annual Hawaii Breast: A Multidisciplinary Case-Based Conference

Hope S. Rugo, MD, FASCO; Naoto T. Ueno, MD, PhD; Benjamin Falit, MD; Jami Fukui, MD; Laura Huppert, MD; Sara A. Hurvitz, MD, FACP; Jodi Kagihara, MD; Irene Kang, MD; William Loui, MD, FACP; Ashley Marumoto, MD; Rebecca Shatsky, MD; Naoko Takebe, MD, PhD; Melinda Telli, MD, FASCO; Rachel Thelen, FNP-C, AOCNP; Teruo Yamauchi, MD, MS

Video

Spotting the Signal: Recognizing and Treating Paraneoplastic LEMS in Small Cell Lung Cancer

Charles Rudin, MD, PhD; Ruham Nasany, MD; Zofia Piotrowska, MD, MHS

Video

Community Oncology Connections™: Beyond Primary End Points – Digging Into Randomized and Real-World Data to Guide Challenging Treatment Decisions in HR+/HER2− Metastatic Breast Cancer | Iowa Oncology Society

Marla D. Lipsyc-Sharf, MD; Sheila Donnelly, MD

Video

Show Me the Data™: Post-TKI Sequencing in EGFR-Mutated NSCLC—Optimizing Current Strategies and Preparing for New Treatment Modalities

Christine M. Lovly, MD, PhD, FASCO; Xiuning Le, MD, PhD; Hossein Borghaei, DO, MS; Lyudmila Bazhenova, MD

Video

Community Oncology Connections™: Beyond Primary End Points – Digging Into Randomized and Real-World Data to Guide Challenging Treatment Decisions in HR+/HER2− Metastatic Breast Cancer | Texas Society of Clinical Oncology

Marla D. Lipsyc-Sharf, MD; Parth Khade, MD

In-Person Event

11th Annual School of Gastrointestinal Oncology® (SOGO®)

April 11, 2026

Video

Medical Crossfire®: Harnessing the Power of Modern Therapies in Newly Diagnosed Multiple Myeloma

C. Ola Landgren, MD, PhD; Mohamad Mohty, MD, PhD; Surbhi Sidana, MD

Video

Medical Crossfire®: Integrating Next-Generation Endocrine Targeting Therapies to Improve Outcomes for Patients With HR+/HER2- Breast Cancer

William J. Gradishar, MD, FASCO, FACP; Laura Huppert, MD; Yuan Yuan, MD, PhD

Video

Evolving Treatment Strategies in Pancreatic Cancer: Current Standards, Emerging Targets, and the Role of Molecular Testing

Eileen M. O’Reilly, MD; E. Gabriela Chiorean, MD, FASCO; Michael J. Pishvaian, MD, PhD; Brian Wolpin, MD, MPH

Video

Medical Crossfire®: Expert Perspectives on Targeting c-Met Overexpression and 𝘔𝘌𝘛 Genomic Alterations in NSCLC – Unveiling the Complexities of 𝘔𝘌𝘛 Dysregulation

Rebecca Heist, MD, MPH; Alex A. Adjei, MD, PhD, FACP; Sandip Patel, MD, FASCO; Jeremy Segal, MD, PhD

Video

Cases & Conversations™: Transforming AML Care—Precision Strategies, Evolving Therapies, and Clinical Insights

Gail J. Roboz, MD; Hagop Kantarjian, MD; Catherine Lai, MD, MPH; Amer Zeidan, MBBS, MHS

Multimedia

Expert Guidance on Frequently Asked Questions Regarding the Use of ADCs in TNBC

Aditya Bardia, MD, MPH, FASCO; Erika P. Hamilton, MD; Virginia Kaklamani, MD, DSc

Multimedia

Evaluating the Latest Data and Ongoing Trials for Novel ADC Approaches in TNBC

Aditya Bardia, MD, MPH, FASCO; Erika P. Hamilton, MD

Multimedia

Breaking Down the Rationale for Targeting TROP2 in TNBC

Filipa Lynce, MD; Rita Nanda, MD

Multimedia

Dissecting Clinical Trial and Real-World Data for ADCs in TNBC

Filipa Lynce, MD; Rita Nanda, MD

Video

Striking the Right Nerve: Managing Cancer Associated LEMS in Lung Cancer Patients

Anne Chiang, MD, PhD; J. Douglas Miles, MD, PhD, FAAN; Suma Satti, MD

Video

Show Me the Data™: Bridging Clinical Gaps Along the Continuum From Resectable, Early Stage to Advanced Gastric/Gastroesophageal Junction Cancers

Zev A. Wainberg, MD; Manish A. Shah, MD, FASCO; Syma Iqbal, MD

Video

Community Oncology Connections™: Beyond Primary End Points—Digging Into Randomized and Real-World Data to Guide Challenging Treatment Decisions in HR+/HER2− Metastatic Breast Cancer | Kentucky Society of Clinical Oncology

Marla D. Lipsyc-Sharf, MD; Munaf Alkadimi, MD

Video

The 4th Annual Hawaii Lung: A Multidisciplinary Case-Based Conference

David R. Gandara, MD; Nicolas Villanueva, MD

In-Person Event

19th Annual New York GU Cancers Congress™

March 13-14, 2026

Video

Medical Crossfire®: Expert Interpretations of the Latest Data in CLL Management – Understanding the Impact of Optimal Treatment Selection on Patient Outcomes

Jennifer R. Brown, MD, PhD; Alexey V. Danilov, MD, PhD; Matthew S. Davids, MD, MMSc

Video

Virtual Testing Board: Digging Deeper on Your Testing Reports to Elevate Patient Outcomes in Advanced Non–Small Cell Lung Cancer

Stephen V. Liu, MD; Michelle Afkhami, MD; Ignacio I. Wistuba, MD; Helena Yu, MD

In-Person + Virtual Event

Medical Crossfire® – From Diagnostic Dilemmas to Potential Treatment Breakthroughs: Exploring Novel Targets for Extrapulmonary Neuroendocrine Carcinomas

March 24, 2026

Video

Addressing Unmet Needs in HER2+ Metastatic BTC

Rahul Gosain, MD, MBA; Rohit Gosain, MD; Ghassan Abou-Alfa, MD, MBA

Multimedia

Community Practice Connections™: Optimizing Treatment Outcomes and Preserving Fertility in Premenopausal HR+ Breast Cancer

Rebecca Shatsky, MD; Kelly McCann, MD, PhD; Michelle L. Taylor, ANP-BC

Multimedia

Community Practice Connections™: Tailored Treatment Approaches for Older Patients With Advanced HR+/HER2– Breast Cancer

Hope S. Rugo, MD, FASCO; Neil M. Iyengar, MD; Komal Jhaveri, MD, FACP

Video

From Bench to Bedside: Paradigm Shifts in HER2+ Metastatic BTC Treatment

Rahul Gosain, MD, MBA; Rohit Gosain, MD; Shubham Pant, MD, MBBS

Video

Proactive Adverse Event Management for HER2+ BTC Treatments

Rahul Gosain, MD, MBA; Rohit Gosain, MD; Rachna T. Shroff, MD, MS, FASCO

Multimedia

Community Practice Connections™: Empowering Interventional Radiologists in the Emerging Era of Oncolytic Immunotherapies for Melanoma

Yana G. Najjar, MD; Douglas B. Johnson, MD, MSCI; Rahul A. Sheth, MD, FSIR

Video

A Case-Guided Discussion on Managing Immune Thrombocytopenic Purpura (ITP)

Cindy Neunert, MD, MSCS; Hanny Al-Samkari, MD; Joseph Shatzel, MD, MCR

Video

Tumor Board: Expert Insights on Managing Classical 𝘌𝘎𝘍𝘙 Mutations, 𝘌𝘎𝘍𝘙 Exon 20 Insertions, and Atypical 𝘌𝘎𝘍𝘙 Mutations in Metastatic NSCLC

Balazs Halmos, MD, MS; Enriqueta Felip, MD, PhD; Julia Rotow, MD

$Cases and Conversations™: Sorting Through the Expanding Treatment Options for Patients with Relapsed/Refractory Multiple Myeloma$

Video

Cases and Conversations™: Sorting Through the Expanding Treatment Options for Patients with Relapsed/Refractory Multiple Myeloma

C. Ola Landgren, MD, PhD; Mohamad Mohty, MD, PhD; Surbhi Sidana, MD

Video

PER Tumor Board®: Applying Recent Advances to Transform the Treatment Paradigm in SCLC—Expert Perspectives on New Approvals and Emerging Strategies

Jonathan W. Goldman, MD; Percy Lee, MD, FASTRO; Erminia Massarelli, MD, PhD, MS; Misty D. Shields, MD, PhD

Video

GI Tumor Board—Applying Recent Advances in Biomarker Testing and Treatment in Metastatic Colorectal Cancer

John H. Strickler, MD; Stacey A. Cohen, MD; Aparna Parikh, MD; Kanwal P.S. Raghav, MBBS, MD

Video

Medical Crossfire®: Improving Patient Outcomes in Myeloproliferative Neoplasms With Novel Therapeutic Approaches

Rami Komrokji, MD; Gabriela Hobbs, MD; John Mascarenhas, MD; Naveen Pemmaraju, MD

Video

Medical Crossfire®: Precision Medicine in Glioma Treatment — Integration of Molecular Profiling to Inform Targeted Therapies

Vinay K. Puduvalli, MD; Manmeet Ahluwalia, MD, MBA; Stephen J. Bagley, MD, MSCE; Angela Waanders, MD, MPH, MS

Video

Breast Cancer Tumor Board: Targeting TROP2 – Innovations in Triple-Negative Breast Cancer Treatment

Joyce O’Shaughnessy, MD; Matthew P. Goetz, MD; Hope S. Rugo, MD, FASCO

Multimedia

Establishing the Rationale for ADC and ICI Combinations in TNBC

Virginia Kaklamani, MD, DSc; Tiffany A. Traina, MD, FASCO

Breaking Down the Latest Clinical Data for First-line Maintenance and R/R SCLC

Patient Presents With Buttock Lesion

Newsletter

Related Content

38-Year-Old Woman With Breast Mass

52-Year-Old Woman With Dysphagia and Dyspnea and Nodule in Neck

56-Year-Old Man With Subcutaneous Soft Tissue Mass in Right Leg

Thyroid Nodule Found in 43-Year-Old Man

23-Year-Old Woman Presents With Cervical Lymphadenopathy

Latest CME

Inaugural Brain & Spine Metastases Conference: Evolving Practice and Emerging Therapies

Community Oncology Connections™: Beyond Primary End Points—Digging Into Randomized and Real-World Data to Guide Challenging Treatment Decisions in HR+/HER2− Metastatic Breast Cancer | Indiana Oncology Society

The 2nd Annual Hawaii Breast: A Multidisciplinary Case-Based Conference

Spotting the Signal: Recognizing and Treating Paraneoplastic LEMS in Small Cell Lung Cancer

Community Oncology Connections™: Beyond Primary End Points – Digging Into Randomized and Real-World Data to Guide Challenging Treatment Decisions in HR+/HER2− Metastatic Breast Cancer | Iowa Oncology Society

Show Me the Data™: Post-TKI Sequencing in EGFR-Mutated NSCLC—Optimizing Current Strategies and Preparing for New Treatment Modalities

Community Oncology Connections™: Beyond Primary End Points – Digging Into Randomized and Real-World Data to Guide Challenging Treatment Decisions in HR+/HER2− Metastatic Breast Cancer | Texas Society of Clinical Oncology

11th Annual School of Gastrointestinal Oncology® (SOGO®)

Medical Crossfire®: Harnessing the Power of Modern Therapies in Newly Diagnosed Multiple Myeloma

Medical Crossfire®: Integrating Next-Generation Endocrine Targeting Therapies to Improve Outcomes for Patients With HR+/HER2- Breast Cancer

Evolving Treatment Strategies in Pancreatic Cancer: Current Standards, Emerging Targets, and the Role of Molecular Testing

Medical Crossfire®: Expert Perspectives on Targeting c-Met Overexpression and 𝘔𝘌𝘛 Genomic Alterations in NSCLC – Unveiling the Complexities of 𝘔𝘌𝘛 Dysregulation

Cases & Conversations™: Transforming AML Care—Precision Strategies, Evolving Therapies, and Clinical Insights

Expert Guidance on Frequently Asked Questions Regarding the Use of ADCs in TNBC

Evaluating the Latest Data and Ongoing Trials for Novel ADC Approaches in TNBC

Breaking Down the Rationale for Targeting TROP2 in TNBC

Dissecting Clinical Trial and Real-World Data for ADCs in TNBC

Striking the Right Nerve: Managing Cancer Associated LEMS in Lung Cancer Patients

Show Me the Data™: Bridging Clinical Gaps Along the Continuum From Resectable, Early Stage to Advanced Gastric/Gastroesophageal Junction Cancers

Community Oncology Connections™: Beyond Primary End Points—Digging Into Randomized and Real-World Data to Guide Challenging Treatment Decisions in HR+/HER2− Metastatic Breast Cancer | Kentucky Society of Clinical Oncology

The 4th Annual Hawaii Lung: A Multidisciplinary Case-Based Conference

19th Annual New York GU Cancers Congress™

Medical Crossfire®: Expert Interpretations of the Latest Data in CLL Management – Understanding the Impact of Optimal Treatment Selection on Patient Outcomes

Virtual Testing Board: Digging Deeper on Your Testing Reports to Elevate Patient Outcomes in Advanced Non–Small Cell Lung Cancer

Medical Crossfire® – From Diagnostic Dilemmas to Potential Treatment Breakthroughs: Exploring Novel Targets for Extrapulmonary Neuroendocrine Carcinomas

Addressing Unmet Needs in HER2+ Metastatic BTC

Community Practice Connections™: Optimizing Treatment Outcomes and Preserving Fertility in Premenopausal HR+ Breast Cancer

Community Practice Connections™: Tailored Treatment Approaches for Older Patients With Advanced HR+/HER2– Breast Cancer

From Bench to Bedside: Paradigm Shifts in HER2+ Metastatic BTC Treatment

Proactive Adverse Event Management for HER2+ BTC Treatments

Community Practice Connections™: Empowering Interventional Radiologists in the Emerging Era of Oncolytic Immunotherapies for Melanoma

A Case-Guided Discussion on Managing Immune Thrombocytopenic Purpura (ITP)

Tumor Board: Expert Insights on Managing Classical 𝘌𝘎𝘍𝘙 Mutations, 𝘌𝘎𝘍𝘙 Exon 20 Insertions, and Atypical 𝘌𝘎𝘍𝘙 Mutations in Metastatic NSCLC

Cases and Conversations™: Sorting Through the Expanding Treatment Options for Patients with Relapsed/Refractory Multiple Myeloma

PER Tumor Board®: Applying Recent Advances to Transform the Treatment Paradigm in SCLC—Expert Perspectives on New Approvals and Emerging Strategies

GI Tumor Board—Applying Recent Advances in Biomarker Testing and Treatment in Metastatic Colorectal Cancer

Medical Crossfire®: Improving Patient Outcomes in Myeloproliferative Neoplasms With Novel Therapeutic Approaches

Medical Crossfire®: Precision Medicine in Glioma Treatment — Integration of Molecular Profiling to Inform Targeted Therapies

Breast Cancer Tumor Board: Targeting TROP2 – Innovations in Triple-Negative Breast Cancer Treatment

Establishing the Rationale for ADC and ICI Combinations in TNBC

Breaking Down the Latest Clinical Data for First-line Maintenance and R/R SCLC

Trending on CancerNetwork

FDA Grants Accelerated Approval to Zongertinib in HER2+ NSCLC

FDA Grants Fast Track Designation to SRN-101 for Recurrent High-Grade Glioma

How has Immunotherapy Evolved in Breast Cancer Treatment?

FDA Issues Partial Clinical Hold on Lorigerlimab Trial in Gynecologic Cancers

Can Subcutaneous Blinatumomab Offer New Option in Rare Acute Leukemia?