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[Isolated ACTH deficiency]

J M González-Clemente1, I Halperín, M P Navarro

  • 1Servicio de Endocrinología y Nutrición, Hospital Clínic i Provincial, Facultad de Medicina, Universidad de Barcelona.

Medicina Clinica
|February 19, 1994
PubMed
Summary
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Isolated ACTH deficiency is a rare condition often misdiagnosed. This study details two cases, highlighting the diagnostic challenges and the importance of comprehensive pituitary function testing for accurate diagnosis.

Area of Science:

  • Endocrinology
  • Internal Medicine
  • Rare Diseases

Background:

  • Isolated ACTH deficiency is an uncommon endocrine disorder with varied presentations.
  • Accurate diagnosis is crucial as symptoms can mimic other conditions, leading to misdiagnosis.

Observation:

  • Two patients initially diagnosed with primary adrenal failure presented with distinct symptoms.
  • One patient experienced altered consciousness and adrenal crisis during pneumonia; the other had weakness, anorexia, weight loss, and lymphocytosis with eosinophilia.
  • Elevated thyrotropic hormone in both cases suggested possible co-existing hypothyroidism.

Findings:

  • Extensive diagnostic workup, including hormonal assays and imaging, confirmed isolated ACTH deficiency.
  • The cause was idiopathic, likely of pituitary origin, with no other hormonal deficiencies identified.

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Implications:

  • This case report underscores the diagnostic complexities of isolated ACTH deficiency.
  • Emphasizes the need for thorough pituitary evaluation to differentiate it from primary adrenal insufficiency and identify associated conditions.