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ACTH-producing pituitary carcinoma presenting as the cauda equina syndrome
A R Frost1, S Tenner, M Tenner
1Department of Pathology, George Washington University Hospital, Washington, DC 20037.
Archives of Pathology & Laboratory Medicine
|January 1, 1995
Summary
This study reports the first case of adrenocorticotropic hormone-producing pituitary carcinoma causing cauda equina syndrome. This rare pituitary cancer highlights the importance of considering unusual presentations in neuro-oncology.
Area of Science:
- Neuro-oncology
- Endocrinology
- Neurosurgery
Background:
- Pituitary carcinoma is a rare malignant tumor of the pituitary gland.
- Adrenocorticotropic hormone (ACTH)-producing pituitary tumors can lead to Cushing's disease.
- Metastatic spread of pituitary tumors, particularly carcinomas, is uncommon.
Observation:
- A 43-year-old woman with a history of pituitary surgery presented with cauda equina syndrome (incontinence, weakness, paresthesia).
- The patient exhibited hypertension and cushingoid features, suggesting hormonal imbalance.
- Surgical decompression revealed an intradural metastatic ACTH-producing pituitary carcinoma.
Findings:
- This is the first documented case of ACTH-producing pituitary carcinoma presenting as cauda equina syndrome.
- Review of literature indicates CNS metastases are more frequent than distant metastases for pituitary carcinoma.
- Patients with distant metastases had a poorer prognosis compared to those with CNS-only metastases.
Implications:
- This case expands the known clinical spectrum of pituitary carcinoma presentations.
- Highlights the potential for pituitary carcinomas to metastasize within the central nervous system, mimicking other spinal cord pathologies.
- Emphasizes the need for thorough diagnostic evaluation in patients with a history of pituitary tumors presenting with neurological deficits.