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Nonfunctioning pituitary adenoma.

S L Howng1, C J Wang

  • 1Department of Surgery, Kaohsiung Medical College, Taiwan, Republic of China.

Gaoxiong Yi Xue Ke Xue Za Zhi = the Kaohsiung Journal of Medical Sciences
|August 1, 1992
PubMed
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Nonfunctional pituitary adenomas, often macroadenomas, present with headaches and vision loss. Surgical intervention effectively resolves symptoms in most patients with these tumors.

Area of Science:

  • Neurosurgery
  • Endocrinology
  • Pathology

Background:

  • Nonfunctional pituitary adenomas (NFPAs) are tumors lacking hormone hypersecretion.
  • Diagnosis and management of NFPAs present unique clinical challenges.
  • Understanding the characteristics of NFPAs is crucial for effective treatment.

Purpose of the Study:

  • To analyze the clinical characteristics, surgical outcomes, and histopathological findings of NFPAs.
  • To evaluate the efficacy of surgical intervention for NFPAs.
  • To correlate imaging findings with clinical presentation and pathology.

Main Methods:

  • Retrospective analysis of 14 patients with NFPAs treated between 1986-1991.
  • Review of clinical data, including symptoms, imaging (CT/MRI), and surgical outcomes.

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  • Histopathological examination and immunohistochemical staining for pituitary hormones.

    • Main Results:

    • 13 macroadenomas and 1 microadenoma were identified.
    • Headache (78.6%) and visual disturbance (50.0%) were the most common symptoms.
    • Surgical intervention led to symptom resolution in 74.2% of patients.
    • Immunohistochemistry showed absence of PRL, GH, ACTH, TSH, but presence of alpha-subunit in some cases.

    Conclusions:

    • NFPAs are frequently macroadenomas presenting with mass effect symptoms like headache and visual impairment.
    • Surgical treatment is effective in alleviating symptoms associated with NFPAs.
    • Histopathological diversity exists, with some NFPAs showing glycoprotein alpha-subunit expression without hormonal hypersecretion.