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Clinical case seminar: lymphocytic hypophysitis: clinicopathological findings
E Thodou1, S L Asa, G Kontogeorgos
1Department of Pathology, Mount Sinai Hospital, Ontario, Canada.
The Journal of Clinical Endocrinology and Metabolism
|August 1, 1995
Summary
Lymphocytic hypophysitis, an inflammatory pituitary condition, often presents in women during pregnancy with symptoms mimicking pituitary tumors. Early diagnosis is crucial for appropriate management, potentially avoiding surgery.
Area of Science:
- Endocrinology
- Pathology
- Radiology
Background:
- Lymphocytic hypophysitis is a rare inflammatory condition affecting the pituitary gland.
- It often mimics pituitary adenomas, leading to diagnostic challenges.
Purpose of the Study:
- To describe the clinicopathological features of lymphocytic hypophysitis.
- To compare findings with existing literature and guide clinical suspicion.
Main Methods:
- Retrospective analysis of 16 patients with lymphocytic hypophysitis.
- Review of clinical, radiological (CT/MR imaging), and histopathological data.
- Immunohistochemistry for inflammatory cell characterization.
Main Results:
- 14 of 16 patients were female, with 71% presenting during pregnancy.
- Common presentations included pituitary mass (56%), hypopituitarism (63%), and diabetes insipidus (19%).
- Imaging often mimicked pituitary adenomas (83%); 25% had co-existing autoimmune thyroiditis.
Conclusions:
- Lymphocytic hypophysitis should be considered in the differential diagnosis of pituitary enlargement, especially in peripartum females and those with autoimmune disorders.
- Clinical suspicion is key, as conservative management may be sufficient, avoiding aggressive surgery.