General or urgent enquiries:
St John's Institute of Dermatology
South Wing, Staircase C
St Thomas' Hospital
Westminster Bridge Road
London SE1 7EH
Tel: 020 7188 6408
Fax: 020 7188 6382
Enquiries concerning reports:secretaries office, 020 7188 6408.
Enquiries relating to tests:Dr Guy Orchard, 020 7188 8160 or email firstname.lastname@example.org.
Specific guidance on dispatching/sending tissue samples: Dr Guy Orchard, 020 7188 8160 or email email@example.com.
Interpretation of results:Dr Eduardo Calonje (head of department), 020 7188 6408 or email firstname.lastname@example.org.
Our dermatopathology laboratory is the largest dedicated skin pathology centre in the UK, with vast experience in complex and rare cases.
We are a major referral centre for both general and specialist dermatopathology. More than 14,000 cases a year are processed by the laboratory and reviewed by specialist consultant dermatopathologists.
We provide support for the Mohs micrographic surgery unit, which involves the removal of facial skin cancer. The Mohs unit is now one of the largest units within the UK for this service.
We have a growing reputation in the study of lymphoma and melanoma, and offers extensive laboratory tests and investigations in these areas.
The routine laboratory opening times are from 9am-5.15 pm, Monday to Friday.
There is no formal weekend working or after hours working arrangements.
Routine specimens should not be delivered for processing after 4pm on any given day.
All specimens sent to the department should be accompanied by appropriate documentation (histology request form or referring letter), and meeting all of the acceptance criteria.
This is documented on the Viapath website.
In addition, high risk specimens should be marked accordingly on both the request form and specimen pot. Specimens received for processing should be fixed in 10% neutral buffered formalin in an appropriate volume which covers the specimen. Standard 60ml pots with formalin can be provided upon request.
In order to minimise the risk of specimen interchange, please make sure specimens are appropriately labelled and segregated to distinguish between different patients.
Make sure all patient demographics and full clinical information is clearly stated on the request form.
If there are any additional requirements, for example stitch markers to indicate orientation or in the case of small friable tissue samples, that they are wrapped to conserve fragments. Please make sure these requirements are clearly stated on all correspondance.
The transfer of specimens from the clinical areas to the laboratory should be done within 24 hours ideally. In cases of delays or errors the laboratory should be informed immediately. Error logs should be completed from the sender's and receiver's end accordingly. Where serious errors have been identified and which influence patient care then a Datix or incident reporting form will be completed by the laboratory.
Health and safety
All specimens sent should be packaged safely according to postal guidelines, which can be found on the Viapath website.
If required, formalin should be disposed of in a safe manner ie down the sink with the use of copious volumes of water. However, if there is a significant spillage ie 500ml or more, staff should evacuate and contact the fire brigade. In case of lower volumes a formalin spill kit is recommended.
All sharps should be disposed of in a safe manner which employs the use of a sharps clinical waste bin.
If any specimen requires additional investigations - for example immunocytochemistry - then this should be clearly stated on the request form with any specfic turn around time requirements.
In addition where follow up investigations are required, then this needs to be clear on any additional requests. Further, if such requests are made after routine processing then the laboratory needs to be informed directly and specific arrangements made.
Please send your referral letter to the address at the top of this webpage, along with a completed histopathology request form outlining the patient information, clinical history and type of specimen (block or slide).
Dermatopathological referrals are accepted from within Guy’s and St Thomas’, from consultants and hospitals (both NHS and private) and from overseas.
If the referral is urgent please mark the letter accordingly and ensure contact details are provided.
We aim to provide a written report for diagnostic purposes within three to five working days of specimen receipt. If further immunocytochemical tests are required, a further five days may be necessary to complete the process. Turn around times for reports on referral cases is set at a maximum of three weeks or 15 working days.
Results are available to clinicians by telephone on 020 7188 6408 or by fax on 020 7188 6382.
No information will be given to patients or their relatives.
Please contact the laboratory directly to discuss tests required and charges.
- Dr Eduardo Calonje MD DIP RCPath - clinical head of department and consultant dermatopathologist
- Dr Catherine M. Stefanato MD - Diplomate in Dermatology and Venereology ( Italy), Diplomate of the American Boards in Pathology and Dermatopathology. Consultant dermatopathologist
- Dr Blanca Martin – consultant dermatopathologist
- Dr William Rickaby FRCPath – clinical fellow in dermatopathology
- Dr Marie–Laure Jullie MD – clinical fellow in dermatopathology.
- Dr Guy Orchard - head of laboratory
- Patricia Fernando - biomedical scientist
- Theddeus Nwokie - biomedical scientist
- Fiona Ismail - biomedical scientist
- Joanne Torres - biomedical scientist
- Mohammed Shams – biomedical scientist
- Effie Georgaki – biomedical scientist
- Chris-Jude Quaye – biomedical scientist
- Karolina Wojcik - biomedical scientist
- Cansu Bulut – associate practitioner
- Blanka Hezelova - medical laboratory assistant
- Jeyrroy Gabriel – medical laboratory assistant
- Pushpaharan Balachandran – medical laboratory assistant
- Zainab Ramji – medical laboratory assistant
- Mrs Saffron Blake - office manager
- Mrs Sue Mitchelson
- Ms Natalie Spring-Brown
- Ms Mandy Montanarini.