Helena Collgros

ORCID: 0000-0002-1475-0668
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About
Contact & Profiles
Research Areas
  • Cutaneous Melanoma Detection and Management
  • Nonmelanoma Skin Cancer Studies
  • Cutaneous lymphoproliferative disorders research
  • Autoimmune Bullous Skin Diseases
  • Nail Diseases and Treatments
  • Cancer and Skin Lesions
  • Cell Image Analysis Techniques
  • Psoriasis: Treatment and Pathogenesis
  • Optical Coherence Tomography Applications
  • Oral Health Pathology and Treatment
  • Salivary Gland Tumors Diagnosis and Treatment
  • Renal cell carcinoma treatment
  • Genetic and rare skin diseases.
  • Pharmaceutical studies and practices
  • Genital Health and Disease
  • Renal and related cancers
  • Uterine Myomas and Treatments
  • Melanoma and MAPK Pathways
  • Cancer Diagnosis and Treatment
  • Health Systems, Economic Evaluations, Quality of Life
  • Healthcare cost, quality, practices
  • AI in cancer detection
  • Digital Imaging in Medicine
  • Dermatologic Treatments and Research
  • melanin and skin pigmentation

Royal Prince Alfred Hospital
2017-2025

The University of Sydney
2020-2025

Perth Royal Infirmary
2024

Melanoma Institute Australia
2024

Hospital Clínic de Barcelona
2016

Consorci Institut D'Investigacions Biomediques August Pi I Sunyer
2016

Hospital Universitari Germans Trias i Pujol
2016

Universitat de Barcelona
2013-2015

Hospital Universitari Sagrat Cor
2012-2015

Hospital Sant Joan de Déu Barcelona
2014

Diagnosis of skin cancer requires medical expertise, which is scarce. Mobile phone-powered artificial intelligence (AI) could aid diagnosis, but it unclear how this technology performs in a clinical scenario. Our primary aim was to test the clinic whether there equivalence between AI algorithms and clinicians for diagnosis management pigmented lesions.In multicentre, prospective, diagnostic, trial, we included specialist novice patients from two tertiary referral centres Australia Austria....

10.1016/s2589-7500(23)00130-9 article EN cc-by The Lancet Digital Health 2023-09-27

A previous single-center study observed fewer excisions, lower health care costs, thinner melanomas, and better quality of life when surveillance high-risk patients was conducted in a melanoma dermatology clinic with structured protocol involving full-body examinations every 6 months aided by total-body photography (TBP) sequential digital dermoscopy imaging (SDDI).To examine longer-term sustainability expansion the program to numerous practices, including primary skin cancer setting.This...

10.1001/jamadermatol.2020.5651 article EN JAMA Dermatology 2021-03-17

Abstract Introduction Hidradenitis suppurativa ( HS ) is a chronic skin disease which causes great impact in the quality of life. Multiple therapeutic options have been proposed, and recently potential use biological drugs severe cases has postulated. Material Methods A retrospective study from seven tertiary Spanish centers reviewing charts patients with treated was performed. Retrieved information included epidemiological data, clinical features, pain intensity, Hurley stage, laboratory...

10.1111/jdv.12438 article EN Journal of the European Academy of Dermatology and Venereology 2014-03-13

Benign melanotic macules (MAC) are the most frequent cause of lip pigmentation and sometimes difficult to differentiate from melanoma (MEL).To report in vivo reflectance confocal microscopy (RCM) features normal lips different phototypes identify that assist distinguishing MEL MAC using dermoscopy RCM.For this retrospective observational study, 2 groups patients tertiary referral centers for (Sydney Melanoma Diagnostic Centre Institute Australia) were recruited between June 2007 January...

10.1001/jamadermatol.2017.0504 article EN JAMA Dermatology 2017-05-03

Abstract Background/Objectives There are limited population‐based data documenting the incidence and management of lentigo maligna ( LM ) invasive melanoma LMM ). We report on occurrence in an Australian population. Methods Prospective collection clinician‐reported situ MIS ; n = 450, capped) localised 3251) notified to New South Wales Cancer Registry over 12‐months 2006–2007. Results The estimated annual all was 27.0 per 100 000 12.2, non‐ 5.9 unclassified 9.0). Patients with or were...

10.1111/ajd.12928 article EN Australasian Journal of Dermatology 2018-10-09

Abstract Background Lentiginous melanoma or lentigo maligna is a slow‐growing type of frequently arising in sun‐damaged skin and often first diagnosed the elderly. Few studies report long‐term follow‐up. Objectives To define characteristics lentiginous situ (LM) invasive (LMM) Australian patients managed at tertiary centre describe local recurrence treatment failure rates after Methods Retrospective single‐centre study LM/LMM evaluated between January 2005 March 2007. Medical photographic...

10.1111/jdv.17135 article EN Journal of the European Academy of Dermatology and Venereology 2021-01-27

Around 70% of cutaneous malignant melanomas (MMs) develop de novo, and small-diameter or 'tiny' lesions are expected to represent the earliest manifestation most MMs.To describe clinical, histopathological dermoscopic features tiny MMs, investigate impact imaging tools, including total body photography (TBP) sequential digital dermoscopy (SDDI) in their detection.Consecutive MMs diagnosed over 2 years a referral centre were retrospectively included. Tiny defined as with diameter ≤ 5 mm on...

10.1111/ced.15094 article EN Clinical and Experimental Dermatology 2022-01-08

Dermanyssus gallinae is a mite that normally parasitizes small birds but may occasionally bite humans. We report an unusual case of 82-year-old woman who presented with pruritus and bite-like lesions over her trunk. Other members the household were also affected. On physical examination, mites < 1 mm in size found on patient's body. The family residing city centre had no pets, there pigeon nests close proximity to house. Most dermatologists have difficulties identifying ectoparasitosis. In...

10.1111/j.1365-2230.2012.04434.x article EN Clinical and Experimental Dermatology 2013-03-27

Abstract Introduction Nail involvement is common in psoriasis and has a considerable impact on patient quality of life. Its clinical presentation depends which part the nail affected: bed or matrix. Fifty percent patients report associated pain. In this study, we analyzed safety effectiveness tazarotene 0.1% hydrophilic ointment treatment psoriasis. Material methods We performed an open observational study 6 diagnosed with The applied compounded preparation under occlusion every night for...

10.1016/j.adengl.2012.09.014 article EN cc-by-nc-nd Actas Dermo-Sifiliográficas 2012-09-26

Multiple cutaneous and uterine leiomyomatosis (MCUL), or Reed syndrome, is characterized by the presence of leiomyomas arising from arrector pili muscles and, in women, leiomyomas. In some cases, MCUL associated with renal cell carcinoma. This syndrome an autosomal dominant disorder caused a heterozygous germline mutation gene that encodes fumarate hydratase, Krebs cycle enzyme acts as tumor suppressor. To review cases diagnosed at 2 university hospitals over 5-year period (2008-2013). was...

10.1016/j.adengl.2014.12.013 article ES cc-by-nc-nd Actas Dermo-Sifiliográficas 2015-01-20

9502 Background: Lentigo maligna (LM) is a form of melanoma in situ that occurs mainly on sun exposed skin. For patients with LM who are not suitable for surgery due to location, size, patient preference or co-morbidities, topical imiquimod radiotherapy alternative non-surgical treatments. There no prospective randomized controlled trial data the basis any recommendations management LM. This multi-institutional, international phase 3 evaluated efficacy and safety verus The primary hypothesis...

10.1200/jco.2024.42.16_suppl.9502 article EN Journal of Clinical Oncology 2024-06-01

Abstract Background Scalp melanomas are usually thicker and show worse prognosis than other sites head neck melanomas. One hypothesis to explain this aggressive behavior could be diagnosis delay attributed hair concealment of lesions. Methods Primary the scalp diagnosed over two decades at four reference centers in Australia Italy were included. Hair coverage visibility lesions assessed on preoperative photographic documentation by investigators correlated with some prognostic factors...

10.1111/ijd.15283 article EN International Journal of Dermatology 2020-10-31

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10.1001/jamadermatol.2014.671 article EN JAMA Dermatology 2014-07-16

Blue naevi may present rarely as multiple lesions grouped in a circumscribed area, described agminated blue naevi. This clinical presentation mimic metastatic malignant melanoma. We two cases of cellular the penis, with dermoscopy, reflectance confocal microscopy and histopathological correlation. Dermoscopy area showed homogeneous dark‐brown to colour. Using microscopy, focusing on bluish areas, predominantly bright dendritic cells were visible at dermoepidermal junction papillary dermis,...

10.1111/ced.12798 article EN Clinical and Experimental Dermatology 2016-01-23
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