|Poll|March 31, 2017

Peritoneal Mass Found in 31-Year-Old Patient

Author(s)Cesar A. Moran, MD

A 31-year-old man presents with a peritoneal mass, and a biopsy is performed. What is your diagnosis?

A 31-year-old man presents with a peritoneal mass, and a biopsy is performed.

Based on the image, what is your diagnosis?

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

Subscribe Now!

Latest CME

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 | Washington State Medical Oncology Society

Marla D. Lipsyc-Sharf, MD; Ashley Frith, MD

Video

A Breath of Strength: Managing Cancer Associated LEMS and Lung Cancer as One

Estelamari Rodriguez, MD, MPH; Millie Das, MD; Ruham Nasany, 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

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

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™: 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

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

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®: 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®: 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

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

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

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

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

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

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

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

Community Oncology Connections™: Optimizing SCLC Treatment Strategies and Managing Adverse Events Across Disease Stages | South Carolina

Misty D. Shields, MD, PhD; Rujul Parikh, MD

Video

Personalized Management in NSCLC: Strategies for Early Detection, Molecular Testing, and Targeted Therapies | Kansas

Charu Aggarwal, MD, MPH, FASCO; Yifan Tu, MD, PhD

Video

Personalized Management in NSCLC: Strategies for Early Detection, Molecular Testing, and Targeted Therapies | Wyoming and Montana

Charu Aggarwal, MD, MPH, FASCO; Mo Ziari, MD

Video

Personalized Management in NSCLC: Strategies for Early Detection, Molecular Testing, and Targeted Therapies | New Mexico

Zofia Piotrowska, MD, MHS; Shan Guo, MD

Video

Community Oncology Connections™: Optimizing SCLC Treatment Strategies and Managing Adverse Events Across Disease Stages | North Carolina

Misty D. Shields, MD, PhD; Michelle Ojemuyiwa, MD

In-Person + Virtual Event

Live Tumor Board: Squamous Cell Carcinoma of the Head & Neck – Post-CRT Decisions in the Locally Advanced Setting

February 19, 2026

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

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

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

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

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

Peritoneal Mass Found in 31-Year-Old Patient

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

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 | Washington State Medical Oncology Society

A Breath of Strength: Managing Cancer Associated LEMS and Lung Cancer as One

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

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

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

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

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

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

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

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

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

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

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

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

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

Community Oncology Connections™: Optimizing SCLC Treatment Strategies and Managing Adverse Events Across Disease Stages | South Carolina

Personalized Management in NSCLC: Strategies for Early Detection, Molecular Testing, and Targeted Therapies | Kansas

Personalized Management in NSCLC: Strategies for Early Detection, Molecular Testing, and Targeted Therapies | Wyoming and Montana

Personalized Management in NSCLC: Strategies for Early Detection, Molecular Testing, and Targeted Therapies | New Mexico

Community Oncology Connections™: Optimizing SCLC Treatment Strategies and Managing Adverse Events Across Disease Stages | North Carolina

Live Tumor Board: Squamous Cell Carcinoma of the Head & Neck – Post-CRT Decisions in the Locally Advanced Setting

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

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

Proactive Adverse Event Management for HER2+ BTC Treatments

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

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

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

Trending on CancerNetwork

Modifiable Risk Factors Suggest Potential for Improving Cancer Prevention

Barriers to CAR T-Cell Referral and Center Access in Multiple Myeloma

Exploring The Impact of ADTs on Cardiac Risk in Prostate Cancer Treatment

2026 Tandem Meetings: What’s the Latest Research in Multiple Myeloma?

Real World Outcomes of CAR T-Cell Therapy in Multiple Myeloma Including Older and Comorbid Patients