Related Experiment Videos
Xanthogranulomatous hypophysitis mimicking a pituitary neoplasm
Shunichi Yokoyama1, Toshiaki Sano, Kenichiro Tajitsu
1Division of Neurosurgery, Nanpuh Hospital, Kagoshima, Japan. s-yokoyama@nanpuh.or.jp
Endocrine Pathology
|February 1, 2005
Summary
Xanthogranulomatous hypophysitis, an inflammatory pituitary disease, can mimic tumors. This case highlights the importance of suspecting inflammatory lesions for accurate diagnosis and management of pituitary conditions.
Area of Science:
- Endocrinology
- Neuropathology
Background:
- Hypophysitis is a rare inflammatory condition affecting the pituitary gland.
- It often presents with symptoms and imaging findings similar to pituitary tumors, posing diagnostic challenges.
Observation:
- A 65-year-old woman presented with weight loss, fatigue, visual disturbance, and psychiatric symptoms.
- Imaging revealed a cystic sellar mass with calcification, hyperintense on T1-weighted MRI and enhancing capsule.
- Endocrinologic evaluation showed hypocorticism, hypothyroidism, and subsequent diabetes insipidus.
Findings:
- Histopathology confirmed xanthogranulomatous hypophysitis, characterized by foamy cells, epithelioid cells (macrophage markers), multinucleated giant cells, and central necrosis.
- Surgical removal led to resolution of visual and psychiatric symptoms, though pituitary hormone deficiencies persisted.
Implications:
- This case underscores the necessity of considering inflammatory hypophysitis in the differential diagnosis of sellar masses.
- Early and accurate diagnosis of inflammatory pituitary lesions is crucial for appropriate patient management and outcomes.