It is with regret that we inform our international community of POSSUMweb users that from 30 June 2024 the POSSUMweb database will no longer be available.

This web-based version was released more than 12 years ago. Maintaining a high level of security with recent software advancements is no longer viable. This means we will no longer accept new subscriptions or renewal requests.

Our current subscribers will be contacted.

We are grateful for all the support from our subscribers and POSSUMweb community throughout the years.

If you have any questions, do not hesitate to contact us at

POSSUMweb is a dysmorphology database.

  • a web browser software tool that can help with diagnosis of syndromes in patients
  • helpful teaching tool.

Provides a flexible search facility, saves time and effort in researching and cross-referencing syndrome information.

over 5000 syndromes

including multiple malformations, chromosomal abnormalities, skeletal dysplasias, metabolic disorders

linked to over 30,000 images

including photos, Xrays, scans, diagrams, and histology

POSSUMweb is a dysmorphology database of multiple malformations, metabolic, teratogenic, chromosomal and skeletal syndromes and their images - for learning and diagnosis