ISDP London
Scientific Programme

Catherine M. Stefanato, BSD President (UK)
Anshoo Sahota, BAD President (UK)
Rossitza Lazova ISDP President (USA)

9:00  Session 1: Updates on Soft Tissue Tumours 

Chairs: Eleni Ieremia (UK), Philip Mckee (UK)

9:00 Fibroblastic Tumours - Raj Patel (USA)

9:15 Vascular tumours - Steven Billings (USA)

9:30 Neural tumours - Eleni Ieremia (UK)

9:45 Smooth muscle and myopericytic tumours - Raj Patel (USA)

10:00 Memorial Lecture: Chris Fletcher - Phillip McKee (UK)

10:30 Coffee Break, Exhibition & Poster Viewing

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11:00 Session 2: Lymphoid Dermatopathology 

Chairs: Lorenzo Cerroni (Austria),  Jacqueline Junkins-Hopkins (USA),  Alejandro Gru (USA)

11:00 CAR T-cell related Lymphoproliferative disorders - A new entity in the skin lymphoma world - Alejandro Gru (USA)
11:15 Follicular T-helper cell lesions and mimics in dermatopathology - Nicholas Ortonne (France)
11:30 Skin lymphoma in Africa and developing Countries, an update - Helmut Beltraminelli (Switzerland)
11:45 A practical approach to the diagnosis of cutaneous lymphoproliferations - Werner Kempf (Switzerland)
12:00 A practical approach to the diagnosis of cutaneous lymphoproliferations - Christina Mitteldorf (Germany)

12:15 Session 3: Updates in Adnexal Tumour Pathology 

Chairs: Ben Tallon (New Zealand), Doina Ivan (USA), Rosalynn Nazarian (USA)

12:15 Adnexal neoplasms on acral sites - Thomas Brenn (USA)
12:30 Porocarcinoma: an update - Thibault Kervarrec (France)
12:45 Navigating Immunohistochemistry in Sweat Gland Tumours - Maxime Battistella (France)
13:00 Cutaneous adnexal tumours: clues to common and unusual variants - Dmitry Kazakov (Switzerland)

13:15 Lunch, Exhibition & Poster viewing

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13:15 ISDP Exec Committee meeting & lunch

Council Chamber (Lunch provided)

14:15 Session 4: Update in Inflammatory Dermatopathology 

Chairs: Luisa Motta (UK), Tammie Ferringer (USA), Jayson Miedema (USA)

14:15 Blistering Barnacles!!  Pearls from the Immunofluorescence Lab - Richard Groves (UK)

14:30 New entities in Inflammatory Dermatopathology - Omar Sangueza  (USA)

14:45 Patterns of Epidermal Neutrophil Exocytosis and Their Diagnostic Implications - Yu Hung Wu (Taiwan)

15:00 Challenges in evaluating in patient inflammatory skin disease - Phil LeBoit (USA)

15:15 Session 5: Paediatric Dermatopathology 

Chairs: Sylvie Fraitag (France), David Cassarino (USA), Kristina Semkova (UK)

15:15 Epidermolysis Bullosa updates - Jemima Mellerio  (UK)
15:30 Spitz and Pieces: Decontructing Paediatric Spitzoid Tumours - Kristina Semkova  (UK)
15:45 Uncommon but Crucial: Paediatric Adnexal Tumours Demystified - David Cassarino (USA)
16:00 Hematologic Skin Proliferations in Children and their Simulators - Philippe Drabent (France)

16:15 Coffee Break, Exhibition & Poster viewing 

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16:45 Session 6: Dermatopathology Education Updates and EQA 

Chairs:  Dieter Metze (Germany), Bipin Mathew (UK), Lynne Jamieson  (UK)

16:45 Online courses in Dermatopathology - An experience report from Münster - Dieter Metze (Germany)
17:00 The Diploma in Dermatopathology awarded by the Royal College of Pathologists - Lynne Jamieson (UK)
17:15 The ICDP Certifying Frankfurt Examination - Lorenzo Cerroni (Austria)
17:30 Ibero-Latin American Examination - Omar Sangueza (USA)
17:45 The Pivotal role of EQA in Enhancing dermatopathology practice: the UK experience - Arti Bakshi (UK)

18:00 Welcome Reception - Osler Long Room 

Chairs:  Su Enn Low (UK), Luisa Motta (UK),  Anjela Galan (USA)

8:00 Mismatch Repair Protein Loss in Merkel Cell Carcinoma: Treatment Response and Survival Analysis - Nina Ventura (USA)

8:06 Real-time pathology at the bedside: the role of in vivo reflectance confocal microscopy in dermatopathology - Erika Varga (Hungary)

8:12 A clinicopathological analysis of cutaneous protothecosis in a multiethnic Asian cohort – unravelling novel clues and pitfalls to aid accurate diagnosis - Joel Lim (Singapore)

8:18 Primary Dermal Melanoma: Clinicopathologic and Genetic Characterization of the Large, Single-Institution Cohort of 51 Cases - Adilson DaCosta (USA)

8:24 The Use of a Melanocytic AI Tool in an Active Skin Pathology Service - Conor Giles-Doran (UK)

8:30 Morphology proposes the question: a practical approach to molecular testing in spitzoid melanocytic lesions - Eleonora Leoni (Switzerland)

8:36 Is Grover Disease Associated with an Increased Risk of Malignancy? A Retrospective Cohort Study Using Standardized Incidence Ratio Analysis - Damian Kostner (Austria)

8:42 Nevus-associated melanoma: What is the best way to distinguish between the two components? A systematic comparison of morphological and immunohistochemical criteria in 73 cases - Wiebke Pruessmann (Germany)

8:48 PRAME in Nail Unit Melanoma: Integrating Transcriptomic Identification with RNA In Situ Hybridization and Immunohistochemical Validation - Taemin Lee (South Korea)

8:54 Targeted Genomic Profiling of Vulvovaginal Melanoma in Skin of Color Women - Joyce Chen (USA)

9:00 Session 8: Updates on Melanocytic Lesions and  Molecular Pathology 

Chairs: Arnaud De La Fouchardiere (France), Victor Prieto (USA), Gerardo Ferrara  (Italy)

9:00    Melanocytes: too many, too few? - Michael Hitchcock (New Zealand)
9:15    Concepts and paradigms for the diagnosis of primary melanocytic neoplasms: past and present - Boris Bastian (USA)
9:30    Melanocytoma - Lyn Duncan (USA)
9:45    WHO classification and beyond: New melanocytic entities - Arnaud De La Fouchardiere (France)
10:00 Conjunctival melanocytic lesions for dermatopathologists - Artur Zembowicz (USA)

10:15 Coffee Break, Exhibition & Poster Viewing 

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10:45 Session 9: Embracing the future: Digital Pathology and Artificial Intelligence

Chairs: Alessio Giubellino (USA),  Aleodor Andea (USA), Gerardo Cazzato (Italy)

10:45 Role of artificial intelligence and digital pathology in dermatology - Rajenda Singh (USA)
11:00 Dermatopathology of malignant melanoma in the era of Artificial Intelligence - Gerardo Cazzato  (Italy)
11:15 Evaluation of pathologic response to neoadjuvant therapy in melanoma: Is AI/digital pathology the answer? - Carlos Torres-Cabala (USA)
11:30 Digital pathology and AI: My experience in an Academic Tertiary Care Centre - Alessio Giubellino (USA)

11:45 Session 10: Updates in Genital Dermatopathology

Chairs: Dorota Markiewicz (UK), Yamile Corredoira (Chile), Corrado D'Arrigo (UK)

11:45 Genitoanal Intraepithelial Neoplasia: More Than One Pathway - Stephan Braun (Germany)

12:00 HPV-indepence p53-wild-type vulvar intraepithelial neoplasia - Lucy Grant (UK)

12:15 "Simulators of Genital Neoplasia: A Clinicopathological Perspective” - Maite Fernandez-Figueras (Spain)

12:30 Vulval melanoma - Marcela Saeb-Lima (Mexico)

12:45 Lunch, Exhibition & Poster viewing

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12:45 ICDP Committee meeting & lunch

Censors Room (Lunch provided)

13:45 Session 11: The AB Ackerman Lecture 

   The Gordon Museum: from Hodgkin’s to Holograms

Chairs: Catherine M. Stefanato (UK), Rossitza Lazova (USA)
 

13:45   14:30 The Gordon Museum: from Hodgkin's to Holograms - William Edwards (UK)

14:30 Session 12: 'Hard Keratin' Dermatopathology: Hair and Nails 

Chairs: Elizabeth Ball (Venezuela),  Joyce Lee (Singapore), Lynne Goldberg (USA)

14:30 Update on Mendalian Hair Disorders - John McGrath (UK)

14:45 Molecular Hair Loss / FFA Genetics - Christos Tziotzios (UK)

15:00 Updates in the Pathology of Alopecia 2026 - Eleanor Knopp (USA)

15:15 Redefining Nail Tumors: Onychopapilloma, Onychomatricoma, and the Expanding Spectrum of Onychocytic Neoplasms - Angel Fernandez-Florez (Spain)

15:30 How to miss Nail Unit melanoma - Beth Ruben (USA)

15:45 Coffee Break, Exhibition & Poster Viewing 

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16:15 Session 13: LEGENDS in Dermatopathology: 

   My Life Journey in Dermatopathology

Chairs: Maxwell Fung (USA), Cecilia Leczano (USA), Rino Cerio (UK)

16:15 My Journey through 5 decades of Dermatopathology - Jag Bhawan (USA)

16:35 My Life Journey in Dermatopathology - Lorenzo Cerroni (Austria)

16:55 My Life Journey in Dermatopathology - Rossitza Lazova (USA)

17:15 My Life Journey in Dermatopathology - Phil Leboit (USA)

17:35 My Life Journey in Dermatopathology - Philip Mckee (UK)

Chairs: Arti Bakshi (UK), Anoud Zidan (UK), Aleodor Andea (USA)

8:00 case 1 Dongyoun Lee (South Korea)

8:04 case 2 Nathan Asher (UK)

8:08 case 3 Mathew Bipin (UK)

8:12 case 4 Asok Biswas (UK)

8:16 case 5 Shane Brennan (UK)

8:20 Q&A

8:25 case 6 Marie Laure Julie (France)

8:29 case 7 Jose Cardoso (Portugal)

8:33 case 8 Yamile Corredoira (Chile)

8:37 case 9 Carlo Cota (Italy)

8:41 case 10 Anoud Zidan (UK)

8:45 Q&A

8:50 ISDP XLVI SINGAPORE SYMPOSIUM 2027 

Joyce Lee (Singapore) 

9:00 Session 15: Non-Melanoma Skin Cancer: Updates 

Chairs: Paul Craig (UK), Phyu Aung (USA), Rino Cerio (UK)

9:00   New Concepts in Cutaneous Squamous Intraepithelial Dysplasia & Carcinoma - Richard Carr (UK)

9:15   Squamous cell Carcinoma: Prognostic Factors and What to Report - Paul Craig (UK)

9:30   From microscope to multi omics: Differentiating high risk from low risk cutaneous squamous cell carcinoma using histopathological features, RNA sequencing, and DNA whole exome sequencing in a nationwide dataset - Antien Mooyart (The Netherlands)

09:45 Merkal cell carcinoma: Updates in Diagnosis and Emerging Concepts - Phyu Aung (USA)

10:00 Wnt/betacatenin-activated rosette-forming carcinoma of the skin - Thibault Kervarrec (France)

10:15 Coffee Break, Exhibition & Poster Viewing 

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10:45 Session 16: Pitfalls in Dermatopathology & Infections in Dermatopathology 

Chairs: Wayne Grayson (South Africa), Julia Lehman (USA), Joanna Czuwara (Poland)

10:45 Mimickers in Dermatopathology - Jag Bhawan (USA)

11:00 Clues and pitfalls in Mucinoses - Franco Rongioletti (Italy)

11:15 Infections vs non-infections granulomatous disorders - Meenakshi Batrani (India)

11:30 Caught off Guard: Cutaneous  Infections - Eglantine Lebas & Steve Walker (UK)

11:45 Session 17: Slide Seminar PART TWO:20 CASES 

Chairs: Arti Bakshi (UK), Anoud Zidan (UK), Aleodor Andea (USA), Mar Llamas Velasco (Spain), Asok Biswas (UK)

11:45 case 11 William Dalleywater (UK)

11:49 case 12 Maged Dariush (UK)

11:53 case 13 Florence Deroide (UK)

11:57 case 14 Uma Nahar (India)

12:01 case 15 Reem El Bahtimi (UAE)

12:05 Q&A

12:10 case 16 Somaia El Sheikh (UK)

12:14 case 17 Eleni Eremia (UK)

12:18 case 18 Marwa Fawzy (Egypt)

12:22 case 19 Tammie Ferringer (USA)

12:26 case 20 Ann Fleming (UK)

12:30 Q&A

12:35 case 21 Maxwell Fung (USA)

12:39 case 22 Angela Galan (USA)

12:43 case 23 Wayne Grayson (South Africa)

12:47 case 24 Cynthia Heffron (Ireland)

12:51 case 25 Jonathan Ho (USA)

12:55 Q&A

13:00 case 26 Doina Ivan (USA)

13:04 case 27 Scott Bresler (USA)

13:08 case 28 Nitin Khirwdkar (UK)

13:12 case 29 Arianna Lamberti (Italy)

13:16 case 30 Sherina Laskar (UK)

13:20 Q&A

13:25 Lunch, Exhibition & Poster viewing

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14:25 Session 18: Slide Seminar PART THREE:21 CASES 

Chairs: Arti Bakshi (UK), Anoud Zidan (UK), Aleodor Andea (USA), Somaia Elsheikh (UK), Nitin Khirwadkar (UK)

14:25 case 31 Cecilia Leczano (USA)

14:29 case 32 Joyce Lee (Singapore)

14:33 case 33 Julia Lehman (USA)

14:37 case 34 Fabrice Ly (UK)

14:41 case 35 Blanca Martin (UK)

14:45 Q&A

14:49 case 36 Juan Carlos Garces (Ecuador)

14:53 case 37 Jayson Miedema (USA)

14:57 case 38 Rosalynn Nazarian (USA)

15:01 case 39 Kyriakos Orphanidis (Sweden)

15:05 case 40 Gauri Panse (USA)

15:09 Q&A 

15:13 case 41 Margot Peters (USA)

15:17 case 42 William Rickaby (UK)

15:21 case 43 Ed Rytina (UK)

15:25 case 44 Phil Shapiro (USA)

15:29 case 45 Saleem Taibjee (UK)

15:33 Q&A

15:37 case 46 Ben Tallon (NZ)

15:41 case  47 Carlo Tomasini (Italy)

15:45 case 48 Mariije van Dijk (Netherlands)

15:49 case 49 Mar Llamas Velasco (Spain)

15:53 case 50 Joanna Czuwara (Poland)

15:57 case 51 Aleodor Andea (USA)

16:01 Q&A

16:05 Coffee Break, Exhibition & Poster Viewing 

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16:35 General Assembly of ISDP 

17:05 Founders Medal Award: Prof Dieter Metze  

Chairs: Rossitza Lazova (USA)

17:20 Session 19: Multicontinental Match 

Chairs: Christine Ahn (USA), Omar Sangueza (USA)

18:20 Prizes, Discussion & Closing Remarks

Chairs: Catherine M. Stefanato, BSD President (UK), Rossitza Lazova, ISDP President (USA)