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Syndrome reference sheet
Generated 12 Oct 2026
Orthopedics · Orthopedics / Bone tumors Gorham syndrome
Also known as: Gorham–Stout syndrome
Massive osteolysis due to lymphatic proliferation.
- Medical specialty
- Orthopedics
- Subspecialty
- Orthopedics / Bone tumors
- Sex & age distribution
- Male: affected; Female: affected, equal; Children: yes
- Gene(s) involved
- KRAS, PIK3CA
Etiology & mechanism
Lymphatic endothelial cell proliferation in bone.
Gene(s) involved (2)
KRASPIK3CA
Symptoms & signs (4)
chylothoraxpainpathologic fracturesprogressive bone loss