Clinical Review Lesson of the week

Spontaneous rupture of Achilles tendon: missed presentation of Cushing's syndrome

BMJ 1999; 319 doi: https://doi.org/10.1136/bmj.319.7209.560 (Published 28 August 1999) Cite this as: BMJ 1999;319:560
  1. Abdusalam Mousa, specialist registrara,
  2. Steve Jones, senior registrara,
  3. Anthony Toft, consultant physicianb,
  4. Petros Perros, consultant physiciana
  1. a Endocrine Unit, Freeman Hospital, Newcastle upon Tyne NE7 7DN
  2. b Endocrine Unit, Royal Infirmary, Edinburgh EH3 9YW
  1. Correspondence to: Dr Mousa
  • Accepted 21 January 1999

Non-iatrogenic Cushing's syndrome is an uncommon endocrine disease with an estimated annual incidence of 0.7-2.4 cases per million.1 If untreated, Cushing's syndrome is associated with appreciable morbidity and premature death.2 3 The presenting clinical features may be non-specific, and the disease often remains undiagnosed for a considerable time. Spontaneous rupture of the Achilles tendon is unusual, but is well described in patients receiving long term steroid treatment.47 The incidence of spontaneous rupture of tendons in non-iatrogenic Cushing's syndrome is unknown. We report two patients with non-iatrogenic Cushing's syndrome who presented with spontaneous rupture of the Achilles tendon, one to an outpatient orthopaedic clinic and the other to an accident and emergency department. The diagnosis of Cushing's syndrome was made one month later in the first …

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