The American Society of Dermatopathology

Consultations in Dermatopathology

Our Consultations in Dermatopathology are a popular perennial part of the ASDP Annual Meeting. Once again this year, we're offering a full slate of consultations virtually. Each session will be held in a Zoom room and limited to 30 attendees. Only attendees who register in advance will have access to the session and accompanying session materials.

1.25 AMA PRA Category 1 Credits™ per session

Fee: $75 per session

See the schedule of Consultations below.


  • Sessions will be offered as part of the pre-meeting program, Monday, October 17 - Wednesday, October 19.
  • Each session is scheduled for one hour and 15 minutes.
  • All sessions will have a maximum of 30 attendees.
  • Registration fee per session is required.

Consultation Schedule


Monday, October 17

8:00 a.m. - 9:15 a.m.

Consult 1   

Instructive Cases from the UCSF Cutaneous Lymphoma Clinic
Laura B. Pincus, MD
This interactive session will encompass clinical and histopathologic ‎presentation of a variety of straightforward and challenging cutaneous ‎lymphoma cases from the USCF multidisciplinary cutaneous lymphoma clinic.. ‎Unusual forms of cutaneous lymphoma will also be discussed.‎
Consult 2

High-risk Non-Melanoma Skin Cancers
Patrick O. Emanuel, MBChB, Dip Arts
Though non-melanoma skin carcinomas (including basal cell carcinoma and ‎squamous cell carcinoma) have traditionally been considered low-risk lesions, ‎high-risk lesions are becoming increasingly recognized. This session will ‎highlight stratifying risk in these common tumors so they can be adequately ‎staged and their risk communicated in the dermatopathology report. ‎
Consult 3

Deadly Sins: 7 Cutaneous Soft Tissue Tumors You Never Want to Miss
Jerad M. Gardner, MD
This session will focus on seven of the most serious, clinically relevant ‎malignant cutaneous soft tissue tumors, all of which have a tendency to be ‎misdiagnosed both clinically and microscopically. Typical clinical and pathologic ‎features, ancillary testing to confirm the diagnosis, important morphologic ‎variants, and specific scenarios, in which the diagnosis may be more easily ‎missed, will also be addressed.

10:00 a.m. - 11:15 a.m.

Consult 4 

Inpatient Dermatopathology: Instructive Cases from the Dermatology Inpatient Consultation Service
Kerri E. Rieger, MD, PhD
This consultation will provide a review of the histopathologic findings in a ‎variety of inflammatory disorders seen by the dermatology inpatient ‎consultation service. Topics included will range from commonly encountered ‎drug eruptions and neutrophilic dermatoses to rare paraneoplastic disorders ‎and infectious etiologies. We will focus on clinical and histopathologic look-‎alikes and potential pitfalls to avoid. 
Consult 5

Mycosis Fungoides, Yes or No?
Alexandra C. Hristov, MD
This session will review clinicopathologic features of mycosis fungoides ‎variants that mimic dermatitis, such as early mycosis fungoides and ppd-like ‎mycosis fungoides, as well as cases of dermatitis that resembles mycosis ‎fungoides. Important clues to the correct diagnosis for each case will also be ‎highlighted.‎
Consult 6

Interesting Cases of Vulva Pathology
M. Angelica Selim, MD
This session will focus on a diversity of vulvar cases with emphasis on clinical ‎presentation, histologic clues and the use of ancillary tests. The case-based ‎presentation will cover a wide spectrum of entities, ranging from inflammatory ‎diseases to glandular lesions and tumors affecting women of different ages. This session will not be available for on-demand viewing.

1:00 p.m. - 2:15 p.m.

Consult 7         

Panniculitis and Other Puzzles
Maxwell A. Fung, MD
This session will include an interactive review of an array of panniculitis cases, ‎ranging from classic to more unusual. Multiple examples of a disease may be ‎shown to demonstrate the range of histopathologic appearances that may be ‎encountered in relatively common forms of panniculitis.‎‎
Consult 8

Atypical and Malignant Adnexal Neoplasms
David S. Cassarino, MD
Cutaneous adnexal tumors encompass a wide array of benign and malignant ‎tumors of various types, which often prove challenging to definitively classify ‎due to overlapping features.. This session will focus on 10 cases of challenging ‎atypical and malignant adnexal tumors, and review important histologic and ‎immunohistochemical findings to aid in their diagnosis. ‎
Consult 9

Evolving Concepts: From Nevi to Melanoma
Iwei Yeh, MD, PhD
This session will provide a review of the histopathologic, clinical and ‎molecular features of congenital, conventional, blue, and Spitz nevi, which ‎underpin the 2018 WHO classification of melanoma. Various melanocytomas, ‎intermediate melanocytic tumors with more than a single oncogenic alteration ‎will be discussed, including deep penetrating, BAP1-inactivated, and PRKAR1A-‎inactivated melanocytomas. We will review examples of the practical use of ‎immunohistochemistry and molecular diagnostics to assist in differentiating ‎these low-grade tumors from melanoma.


3:00 p.m. - 4:15 p.m.

Consult 10                 

Advanced Alopecia
Leonard C. Sperling, MD
This session is intended for individuals who are comfortable with horizontal ‎sections and the most common forms of hair loss as seen in horizontal ‎sections. Less common entities, as well as histologic mimics that can represent ‎pitfalls or diagnostic challenges will also be discussed. 
Consult 11

Oral Pathology Roundtable Review: Common, Uncommon and Challenging Cases
Richard C. Jordan, MD
This session will include a range of common and unusual mucosal conditions ‎supplemented with selected salivary gland tumors that may be encountered in ‎a dermatopathology practice. Diagnostic methods utilized in evaluation of each ‎case, and review of important clinical findings and the implications of each ‎diagnosis will also be discussed.‎‎
Consult 12

A Practical Pattern-based Approach to Cutaneous Soft Tissue Tumors
Rajiv M. Patel, MD
This session will use a case-based format to provide a practical pattern-based ‎approach to important diagnostic dilemmas encountered in cutaneous soft ‎tissue tumor pathology. Critical differentiating morphologic features and ‎evidence-based, practical and cost-effective approach to the use of ancillary ‎diagnostic tools will be emphasized.‎


Tuesday, October 18

8:00 a.m. - 9:15 a.m.

Consult 13 

Alopecia Pitfalls
Catherine M. Stefanato, MD, FRCPath
In recent years, the increased number of scalp biopsies in alopecia has ‎contributed to improved confidence in distinguishing the histopathologic ‎characteristics of ‘classic’ scarring and non-scarring alopecias, as well as the ‎spectrum of their presentation. Occasionally, however, histopathologic ‎‎‘dogmas’ have been disproven. Pitfalls and clues enabling diagnosis of alopecia ‎will be reviewed on both horizontal and vertical histologic sections. The value ‎and importance of clinical-pathologic correlation and of ancillary studies to ‎increase diagnostic yield will also be discussed.‎‎
Consult 14

Challenging Inpatient Skin Biopsies
Mai P. Hoang, MD
Accurate diagnosis of an urgent inpatient skin biopsy results in appropriate ‎treatment, shortened hospitalization and decreased cost. This session will ‎encompass the entities demonstrating the histologic and clinical findings of ‎dermatologic conditions encountered in the inpatient setting in a case-based ‎approach. This session will not be available for on-demand viewing.‎  ‎
Consult 15
Tough Melanocytic Lesions
Dirk M. Elston, MD
This session will focus on difficult melanocytic tumors along with an approach ‎to evaluation and management.‎

10:00 a.m. - 11:15 a.m.

Consult 16                  

Diagnostic Challenges in Cutaneous Vascular Tumors
Steven D. Billings, MD
This session will cover a variety of challenging vascular tumors, including ‎unusual benign vascular tumors, vascular tumors of intermediate malignancy ‎and malignant vascular tumors. Histologic features and differential diagnoses ‎will be emphasized.‎‎
Consult 17

Immunohistochemistry and Molecular Testing in Melanocytic Tumors: What ‎Should You Order?‎
Jeffrey P. North, MD
The number of ancillary stains/tests to assist with diagnostically challenging ‎melanocytic neoplasms continually increases. This session will focus on ‎biopsies of difficult melanocytic lesions, and how immunoperoxidase stains ‎and molecular testing can assist with accurate diagnosis of difficult melanocytic ‎tumors. ‎
Consult 18

Introduction to Cutaneous Lymphomas
David J. DiCaudo, MD
This introductory session will cover the most common and well-recognized ‎types of primary cutaneous T-cell lymphoma and B-cell ‎lymphoma. Microscopic, immunohistochemical and clinical features will be ‎discussed.‎


1:00 p.m. - 2:15 p.m.

Consult 19 

The Spectrum of Autoimmune Diseases in Dermatopathology
Alina G. Bridges, DO
This session will provide updates and review autoimmune connective tissue ‎diseases. A diagnostic approach to these disorders will be presented with an ‎emphasis on clinical pathologic correlation and appropriate evaluation. The ‎knowledge gained can be applied to provide optimal patient care and improve ‎outcomes.‎‎
Consult 20

Nail Pathology: Basics and Beyond
Beth S. Ruben, MD
This interactive session will begin with a brief review of nail pathology basics ‎including normal anatomy and processing pearls, followed by examination of ‎the most important entities in the realm of nail unit pathology and broad ‎range of differential diagnoses. Entities discussed will include pigmented ‎lesions (melanonychia), epithelial and other neoplasms, as well as ‎inflammatory and infectious diseases.‎‎
Consult 21

Basic Alopecia
Eleanor A. Knopp, MD
This session will cover the fundamentals of the approach to alopecia biopsy ‎including optimal processing techniques, the basics of counting hairs, anatomy ‎of anagen and catagen/telogen hairs, and a step-by-step approach to working ‎through a biopsy to reach a diagnosis. Examples of important diagnoses will be ‎covered with clinical correlations. 


3:00 p.m. - 4:15 p.m.

Consult 22                  

Pediatric Dermatopathology: Instructive Cases from the Children’s Hospital of ‎Philadelphia
Adam I. Rubin, MD
This session will review both relatively common and rare, yet no less ‎important, inflammatory and neoplastic entities seen in neonates, infants, and ‎children. Key teaching points and considerations specific to the diagnosis and ‎care of pediatric patients will be emphasized.‎‎
Consult 23

Pseudosarcomatous Soft Tissue Proliferations: Know Which Entities Are All ‎Bark and No Bite
Ryanne Brown, MD, MBA
This session will review best practices to avoid over-diagnosis of ‎pseudosarcomatous proliferations that can grow rapidly or look cytologically ‎atypical, but pose little to no risk to the patient. Recent ancillary testing ‎developments with the potential to assist in diagnosing these challenging ‎lesions will also be discussed.
Consult 24

Comprehensive Diagnosis of Melanocytic Neoplasia by IHC, Molecular and ‎Conventional
Gregory Hosler, MD, PhD and Drazen M. Jukic, MD, PhD
This session is designed for practicing dermatopathologists and trainees ‎interested in learning a practical algorithmic approach to tackling difficult ‎melanocytic lesions. H&E clues and effective use of immunohistochemistry and ‎molecular tools will be emphasized.‎


Wednesday, October 19

8:00 a.m. - 9:15 a.m.

Consult 25 
Approach to Alopecia Biopsy
Lynne J. Goldberg, MD
This session will explore the most common causes of hair loss in transverse ‎section. The approach allows for both collation within a given specimen and ‎comparison between specimens.‎‎
Consult 26

Cutaneous T-cell Lymphoma: New Challenges, New Tools, New Approaches
Roberto A. Novoa, MD
The past few years have seen a steady transformation in the diagnosis and ‎management of cutaneous T-cell lymphoma. Through case-based discussion, ‎this session will focus on new molecular tests that may aid with difficult ‎diagnoses or therapeutic decision-making, interpretation of benign and ‎aggressive mimics of mycosis fungoides, with an emphasis on the use and ‎limitations of new assays, and skin eruptions associated with the treatment of ‎cutaneous lymphoma patients.‎‎
Consult 27

Quandaries in Hospital Inpatient Dermatopathology
Daniel D. Miller, MD
This session will review common challenges in hospital inpatient ‎dermatopathology, including drug eruptions, graft-versus-host disease, ‎vasculopathies and soft tissue infections. Evidence-based approaches to ‎diagnosis for these challenging scenarios will be emphasized.‎

10:00 a.m. - 11:15 a.m.

Consult 28                  

Look-alikes in Neoplastic Dermatopathology
David J. DiCaudo, MD
This session will focus on “wolves in sheep’s clothing”, e.g., malignant ‎neoplasms resembling benign entities. Emphasis will be given to recognizing ‎subtle clues and methods to confirm the correct diagnosis.‎
Consult 29

Lesions I Have Learned From
Philip E. LeBoit, MD
This session will emphasize cases that are at the limits of our knowledge. ‎Special attention will be given to cases exemplifying emerging entities that ‎correlate with advances in genomics, including melanocytic neoplasms. ‎
Consult 30

Understanding Molecular Testing Applications and Its Impact in the Various Cutaneous Neoplasms
Ariv Arasan Karunamurthy, MD
This session will focus on concepts behind various molecular applications, ‎from PCR to next generation sequencing, from karyotyping to SNP array to ‎genome sequencing. How and when to apply them in the diagnosis and ‎treatment in various cutaneous neoplasms will also be discussed.‎


1:00 p.m. - 2:15 p.m.

Consult 31 
Vascular Lesions
Omar P. Sangueza, MD
This session will highlight clinical, histological and immunohistochemical ‎features of common and unusual vascular conditions Special attention will be ‎given to prognosis and patient care.
Consult 32

Basic and Advanced Nail Pathology
Adam I. Rubin, MD
This session will provide a comprehensive overview of the nail unit ranging ‎from basic anatomy and inflammatory patterns, to the most up-to-date ‎controversies regarding nail unit tumors. Get ready for a whirlwind tour of the ‎nail unit through clinical, surgical and pathologic correlations!‎
Consult 33
Infections and Infestations
Dirk M. Elston, MD
This session will include a wide range of infections and infestations with an ‎emphasis on key diagnostic features.‎


3:00 p.m. - 4:15 p.m.

Consult 34                                 
Everything You Wanted to Know About Immunohistochemistry but Were Afraid to Ask
Timothy H. McCalmont, MD
This session will offer insight into immunoperoxidase staining strategies using ‎a case-based format. Scenarios and pitfalls of importance to the diagnosis and ‎stratification of melanocytic, epithelial, adnexal, and mesenchymal tumors will ‎be reviewed.‎‎
Consult 35              

Blistering Disorders and Direct Immunofluorescence: Practical Advice for Daily ‎Practice
Sara C. Shalin, MD, PhD
How can direct immunofluorescence studies be used to maximize diagnostic ‎yield, and how can the dermatopathologist avoid pitfalls in interpretation? ‎Which strategies can be implemented in report sign out that will ensure ‎appropriate triage or follow up testing for the patient, particularly when direct ‎immunofluorescence studies are not available? This session will discuss ‎histologic patterns of blistering disorders and vasculitis as well as the utility of ‎direct immunofluorescence in a variety of immune-mediated cutaneous ‎diseases using photographic images of DIF studies and clinical images to ‎complement virtual slides.‎‎
Consult 36

Cutaneous Lymphoma or Not
Lyn McDivitt Duncan, MD
While histopathology is necessary for diagnosing lymphoma in the skin, clinical ‎pathological correlation is essential to accurate diagnosis. This session will ‎highlight cases from the multidisciplinary Cutaneous Lymphoma program at ‎the Massachusetts General Hospital in Boston. Differential diagnoses and ‎histopathological and clinical clues will also be discussed. ‎