Rosai-Dorfman-Destombes disease
Prepared with OnCo (onco.cc/prep/rosai-dorfman-disease/). Orientation, not medical advice; your team knows your case.
My details
What I know, what is unclear, changes to discuss
Saved in this browserMy questions
16 on the sheet- 1.What is my exact diagnosis, stage, and grade, and which tests established them?
- 2.Which biomarkers have been tested on my tumour (for example S100 and CD68 positive, CD1a and langerin negative histiocytes with emperipolesis, KRAS, MAP2K1 and other MAPK pathway mutations, FDG-PET/CT for extent and response, IgG4-positive plasma cells, Immunoglobulin levels, autoimmune screen and SLC29A3 testing where familial disease is suspected), and what were the results?
- 3.Which subtype is my cancer, and does that change the recommended treatment?
- 4.Is germline (inherited) genetic testing recommended for me or my family?
- 5.For my situation (diagnosis and staging), which of the standard options do you recommend and why?
- 6.For my situation (asymptomatic nodal or cutaneous disease), which of the standard options do you recommend and why?
- 7.For my situation (single or compressive extranodal lesion), which of the standard options do you recommend and why?
- 8.For my situation (multifocal or organ-threatening disease), which of the standard options do you recommend and why?
- 9.Am I a candidate for Cladribine, Methotrexate, Rituximab, and what side effects should I expect?
- 10.For my situation (mapk-mutant or refractory disease), which of the standard options do you recommend and why?
- 11.Am I a candidate for Cobimetinib, and what side effects should I expect?
- 12.Are there clinical trials I could join, for example of Cobimetinib?
- 13.Would a second opinion at a high-volume centre change anything, and can you help arrange it?
- 14.What supportive care (symptom control, nutrition, exercise, mental health, financial help) is available from the start?
- 15.I read that “Which patients will regress spontaneously cannot be predicted”. How does that affect my plan?
- 16.I read that “Two thirds of cases have no identified driver mutation”. How does that affect my plan?
The words I may hear
- Retroperitoneum: The space at the back of the abdomen, behind the gut's lining, holding the kidneys, adrenals, pancreas, aorta and the para-aortic lymph nodes.
- Driver mutation: One of the few mutations in a tumour that actually causes it to grow.
Tests and results to bring
Diagnosis and staging: Excisional biopsy with immunohistochemistry and MAPK pathway sequencing; FDG-PET/CT; MRI where neurological disease is suspected; immunoglobulins and autoimmune screen.
Biomarker results to ask for: S100 and CD68 positive, CD1a and langerin negative histiocytes with emperipolesis, KRAS, MAP2K1 and other MAPK pathway mutations (about a third), FDG-PET/CT for extent and response, IgG4-positive plasma cells (IgG4-related overlap), Immunoglobulin levels, autoimmune screen and SLC29A3 testing where familial disease is suspected, MRI of brain and spine for neurological disease.
Scans and tests linked to this cancer: Active surveillance, Comprehensive genomic profiling, FDG PET, Histopathology & immunohistochemistry, MRI.
Bring copies of scan reports, pathology and blood results, and a list of every medicine and supplement.
The treatments I may be offered
- Asymptomatic nodal or cutaneous disease: Observation, because spontaneous regression is common. (Active surveillance)
- Single or compressive extranodal lesion: Surgical excision or debulking; radiotherapy for unresectable localised disease (orbit, airway). (IMRT / IGRT (modern external beam))
- Multifocal or organ-threatening disease: Corticosteroids for rapid control; sirolimus with prednisone, cladribine, methotrexate or lenalidomide; rituximab for IgG4-associated disease. (Cladribine, Methotrexate, Rituximab)
- MAPK-mutant or refractory disease: Cobimetinib (approved 2022 for histiocytic neoplasms) or trametinib. (Cobimetinib, RAS / RAF / MEK / ERK (MAPK), Small-molecule kinase inhibitors)
From the standard of care recorded for this cancer; which apply depends on your stage and biomarkers. Ask which the team recommends and why.