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  • Title: Extensive spinal hyperostosis in a patient receiving isotretinoin--progression after 4 years of etretinate therapy.
    Author: Archer CB, Elias PM, Lowe NJ, Griffiths WA.
    Journal: Clin Exp Dermatol; 1989 Jul; 14(4):319-21. PubMed ID: 2591100.
    Abstract:
    A patient with Darier's disease was discovered to have persistent, asymptomatic cervical and thoracic spinal hyperostoses after receiving isotretinoin for 7 years. The spinal abnormalities have remained asymptomatic but have now progressed following 4 years of etretinate therapy. The development of skeletal abnormalities, in particular spinal hyperostosis, is well-documented in patients receiving the synthetic retinoid, isotretinoin (Accutane, Roaccutane). The occurrence of extraspinal tendon and ligament calcification has been emphasized following long-term therapy with etretinate (Tegison, Tigason), but the relationship between etretinate and spinal hyperostosis is less certain, there being a need for a long-term, prospective, appropriately controlled investigation of patients receiving etretinate. We report a patient with Darier's disease who was discovered to have prominent, asymptomatic cervical and thoracic spinal hyperostoses after receiving isotretinoin for 7 years. Subsequent treatment with etretinate for 4 years did not prevent progression of the spinal abnormalities.
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