ISDP London
Scientific Programme

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

09:00  Session 1: Updates on Soft Tissue Tumours 

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

09:00 09:15 Fibroblastic Tumours - Raj Patel (USA)

09:15 09:30 Vascular tumours - Steven Billings (USA)

09:30 09:45 Neural tumours - Eleni Ieremia (UK)

09:45 10:00 Smooth muscle and myopericytic tumours - Raj Patel (USA)

10:00 10:30 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 11:15 CAR T-cell related Lymphoproliferative disorders - A new entity in the skin lymphoma world - Alejandro Gru (USA)
11:15 11:30 Follicular T-helper cell lesions and mimics in dermatopathology - Nicholas Ortonne (France)
11:30 11:45 Skin lymphoma in Africa and developing Countries, an update - Helmut Beltraminelli (Switzerland)
11:45 12:00 A practical approach to the diagnosis of cutaneous lymphoproliferations - Werner Kempf (Switzerland)
12:00 12:15 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 12:30 Adnexal neoplasms on acral sites - Thomas Brenn (USA)
12:30 12:45 Porocarcinoma: an update - Thibault Kervarrec (France)
12:45 13:00 TBC
13:00 13:15 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   14:30 Blistering Barnacles!!  Pearls from the Immunofluorescence Lab - Richard Groves (UK)

14:30   14:45 New entities in Inflammatory Dermatopathology - Omar Sangueza  (USA)

14:45   15:00 Patterns of Epidermal Neutrophil Exocytosis and Their Diagnostic Implications - Yu Hung Wu (Taiwan)

15:00   15:15 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 15:30 Epidermolysis Bullosa updates - Jemima Mellerio  (UK)
15:30 15:45 Spitz and Pieces: Decontructing Paediatric Spitzoid Tumours - Kristina Semkova  (UK)
15:45 16:00 Uncommon but Crucial: Paediatric Adnexal Tumours Demystified - David Cassarino (USA)
16:00 16:15 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 17:00 Online courses in Dermatopathology - An experience report from Münster - Dieter Metze (Germany)
17:00 17:15 Royal College of Pathologists Diploma - Lynne Jamieson (UK)
17:15 17:30 The ICDP Certifying Frankfurt Examination - Lorenzo Cerroni (Austria)
17:30 17:45 Ibero-Latin American Examination - Omar Sangueza (USA)
17:45 18:00 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)

08:00 08:06 O01 Mismatch Repair Protein Loss in Merkel Cell Carcinoma: Treatment Response and Survival Analysis - Nina Ventura (USA)
08:06 08:12 O02 Real-time pathology at the bedside: the role of in vivo reflectance confocal microscopy in dermatopathology - Erika Varga (Hungary)
08:12 08:18 O03 A clinicopathological analysis of cutaneous protothecosis in a multiethnic Asian cohort – unravelling novel clues and pitfalls to aid accurate diagnosis - Joel Lim (Singapore)
08:18 08:24 O04 Primary Dermal Melanoma: Clinicopathologic and Genetic Characterization of the Large, Single-Institution Cohort of 51 Cases - Adilson DaCosta (USA)
08:24 08:30 O05 The Use of a Melanocytic AI Tool in an Active Skin Pathology Service - Conor Giles-Doran (UK)
08:30 08:36 O06 Morphology proposes the question: a practical approach to molecular testing in spitzoid melanocytic lesions - Eleonora Leoni (Switzerland)
08:36 08:42 O07 Is Grover Disease Associated with an Increased Risk of Malignancy? A Retrospective Cohort Study Using Standardized Incidence Ratio Analysis - Damian Kostner (Austria)
08:42 08:48 O08 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)
08:48 08:54 O09 PRAME in Nail Unit Melanoma: Integrating Transcriptomic Identification with RNA In Situ Hybridization and Immunohistochemical Validation - Taemin Lee (South Korea)
08:54 09:00 O10 Targeted Genomic Profiling of Vulvovaginal Melanoma in Skin of Color Women - Joyce Chen (USA)

09:00 Session 8: Updates on Melanocytic Lesions and  Molecular Pathology 

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

09:00 09:15 Melanocytes: too many, too few? - Michael Hitchcock (New Zealand)
09:15 09:30 Concepts and paradigms for the diagnosis of primary melanocytic neoplasms: past and present - Boris Bastian (USA)
09:30 09:45 Melanocytoma - Lyn Duncan (USA)
09:45 10:00 WHO classification and beyond: New melanocytic entities - Arnaud De La Fouchardiere (France)
10:00 10:15 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 11:00 Role of artificial intelligence and digital pathology in dermatology - Rajenda Singh (USA)
11:00 11:15 Dermatopathology of malignant melanoma in the era of Artificial Intelligence - Gerardo Cazzato  (Italy)
11:15 11:30 Evaluation of pathologic response to neoadjuvant therapy in melanoma: Is AI/digital pathology the answer? - Carlos Torres-Cabala (USA)
11:30 11:45 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   12:00 Genitoanal Intraepithelial Neoplasia: More Than One Pathway - Stephan Braun (Germany)

12:00   12:15 HPV-indepence p53-wild-type vulvar intraepithelial neoplasia - Lucy Grant (UK)

12:15   12:30 "Simulators of Genital Neoplasia: A Clinicopathological Perspective” - Maite Fernandez-Figueras (Spain)

12:30   12:45  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 de Picon (Spain),  Joyce Lee (Singapore), Lynne Goldberg (USA)

14:30   14:45 Update on Mendalian Hair Disorders - John McGrath (UK)

14:45   15:00 Molecular Hair Loss / FFA Genetics - Christos Tziotzios (UK)

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

15:15   15:30 Redefining Nail Tumors: Onychopapilloma, Onychomatricoma, and the Expanding Spectrum of Onychocytic Neoplasms - Angel Fernandez-Florez (Spain)

15:30   15:45 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   16:35 My Journey through 5 decades of Dermatopathology - Jag Bhawan (USA)

16:35   16:55 My Life Journey in Dermatopathology - Lorenzo Cerroni (Austria)

16:55   17:15 My Life Journey in Dermatopathology - Rossitza Lazova (USA)

17:15   17:35 My Life Journey in Dermatopathology - Phil Leboit (USA)

17:35   17:55 My Life Journey in Dermatopathology - Philip Mckee (UK)

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

8:00-8:04 case 1 Dongyoun Lee (South Korea)

8:04-8:08 case 2 Nathan Asher (UK)

8:08-8:12 case 3 Mathew Bipin (UK)

8:12-8:16 case 4 Asok Biswas (UK)

8:16-8:20 case 5 Shane Brennan (UK)

8:20-8:25 Q&A

8:25-8:29 case 6 Marie Laure Julie (France)

8:29-8:33 case 7 Jose Cardoso (Portugal)

8:33-8:37 case 8 Yamile Corredoira (Chile)

8:37-8:41 case 9 Carlo Cota (Italy)

8:41-8:45 case 10 Anoud Zidan (UK)

8:45-8:50 Q&A

08:50 ISDP XLVI SINGAPORE SYMPOSIUM 2027 

Joyce Lee (Singapore) 

09:00 Session 15: Non-Melanoma Skin Cancer: Updates 

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

09:00   09:15 New Concepts in Cutaneous Squamous Intraepithelial Dysplasia & Carcinoma - Richard Carr (UK)

09:15   09:30 Squamous cell Carcinoma: Prognostic Factors and What to Report - Paul Craig (UK)

09:30   09:45 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   10:00  Merkal cell carcinoma: Updates in Diagnosis and Emerging Concepts - Phyu Aung (USA)

10:00   10:15  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   11:00 Mimickers in Dermatopathology - Jag Bhawan (USA)

11:00   11:15 Clues and pitfalls in Mucinoses - Franco Rongioletti (Italy)

11:15   11:30 Infections vs non-infections granulomatous disorders - Meenakshi Batrani (India)

11:30   11:45 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)

11:45-11:49 case 11 William Dalleywater (UK)

11:49-11:53 case 12 Maged Dariush (UK)

11:53-11:57 case 13 Florence Deroide (UK)

11:57-12:01 case 14 Uma Nahar (India)

12:01-12:05 case 15 Reem El Bahtimi (UAE)

12:05-12:10 Q&A

12:10-12:14 case 16 Somaia El Sheikh (UK)

12:14-12:18 case 17 Eleni Eremia (UK)

12:18-12:22 case 18 Marwa Fawzy (Egypt)

12:22-12:26 case 19 Tammie Ferringer (USA)

12:26-12:30 case 20 Ann Fleming (UK)

12:30-12:35 Q&A

12:35-12:39 case 21 Maxwell Fung (USA)

12:39-12:43 case 22 Angela Galan (USA)

12:43-12:47 case 23 Wayne Grayson (South Africa)

12:47-12:51 case 24 Cynthia Heffron (Ireland)

12:51-12:55 case 25 Jonathan Ho (USA)

12:55-13:00 Q&A

13:00-13:04 case 26 Doina Ivan (USA)

13:04-13:08 case 27 Scott Bresler (USA)

13:08-13:12 case 28 Nitin Khirwdkar (UK)

13:12-13:16 case 29 Arianna Lamberti (Italy)

13:16-13:20 case 30 Sherina Laskar (UK)

13:20-13:25 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)

14:25-14:29 case 31 Cecilia Leczano (USA)

14:29-14:33 case 32 Joyce Lee (Singapore)

14:33-14:37 case 33 Julia Lehman (USA)

14:37-14:41 case 34 Fabrice Ly (UK)

14:41-14:45 case 35 Blanca Martin (UK)

14:45-14:49 Q&A

14:49-14:53 case 36 Juan Carlos Garces (Ecuador)

14:53-14:57 case 37 Jayson Miedema (USA)

14:57-15:01 case 38 Rosalynn Nazarian (USA)

15:01-15:05 case 39 Kyriakos Orphanidis (Sweden)

15:05-15:09 case 40 Gauri Panse (USA)

15:09-15:13 Q&A 

15:13-15:17 case 41 Margot Peters (USA)

15:17-15:21 case 42 William Rickaby (UK)

15:21-15:25 case 43 Ed Rytina (UK)

15:25-15:29 case 44 Phil Shapiro (USA)

15:29-15:33 case 45 Saleem Taibjee (UK)

15:33-15:37 Q&A

15:37-15:41 case 46 Ben Tallon (NZ)

15:41-15:45 case  47 Carlo Tomasini (Italy)

15:45-15:49 case 48 Mariije van Dijk (Netherlands)

15:49-15:53 case 49 Mar Llamas Velasco (Spain)

15:53-15:57 case 50 Joanna Czuwara (Poland)

15:57-16:01 case 51 Aleodor Andea (USA)

16:01-16:05 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)