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Vol. 55. Issue 3.
Pages 203-206 (July - September 2022)
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Vol. 55. Issue 3.
Pages 203-206 (July - September 2022)
Brief report
Idiopathic granulomatous hypophysitis mimicking adenoma
Hipofisitis granulomatosa: remedo de adenoma
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33
Merve Meryem Kirana,
Corresponding author
mervemkiran@gmail.com

Corresponding author.
, Ercan Balb, Ayca Dilsad Kuratmera,c, Karabekir Ercand, Berrak Gumuskayaa,c, Fazli Erdogana,c
a Department of Pathology, Ankara Bilkent State Hospital, Ankara, Turkey
b Department of Neurosurgery, Ankara Yildirim Beyazit University, Ankara, Turkey
c Department of Pathology, Ankara Yildirim Beyazit University, Ankara, Turkey
d Department of Radiology, Ankara Bilkent State Hospital, Ankara, Turkey
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Abstract

Hypophysitis is a rare disease of pituitary gland, which, although it is usually a primary lesion, can also occur secondary to systemic conditions. Granulomatous hypophysitis is an inflammatory disease condition which accounts for less than 1% of all cellular lesions and can mimic adenoma.

A 32-year-old woman presented with weight gain, galactorrhea and blurred vision. The MRI showed a cystic, nodular lesion in the intermediate lobe of the pituitary gland and the initial diagnosis was adenoma. She underwent surgery and the histopathology revealed granulomas composed of epithelioid histiocytes, multinuclear giant cells and mononuclear inflammatory cells.

Inflammatory diseases of the pituitary gland are much less frequent than pituitary adenomas and idiopathic granulomatous hypophysitis is extremely rare. Histopathology and the ruling out of a systemic cause are the gold standards for its diagnosis.

Keywords:
Pituitary
Granuloma
Hypophysitis
Pituitary adenoma
MRI
Resumen

La hipofisitis es una enfermedad rara de la glándula pituitaria, y a pesar de ser fundamentalmente una enfermedad primaria, puede ser también secundaria a enfermedades sistémicas. La hipofisitis granulomatosa es una enfermedad inflamatoria que representa menos del 1% de todas las lesiones celulares, y remedar al adenoma.

Mujer de 32 años de edad ingresada en el hospital con aumento de peso, galactorrea y visión borrosa. La RM reflejó una lesión quística y nodular en el lóbulo intermedio de la glándula pituitaria, que fue operada con diagnóstico primario de adenoma. El examen microscópico reveló granulomas formados por histiocitos epitelioides, células gigantes multinucleares y células inflamatorias mononucleares.

Las enfermedades inflamatorias de la glándula pituitaria son muy raras en comparación con los adenomas pituitarios. La hipofisitis granulomatosa idiopática es una de ellas. El criterio de referencia para este diagnóstico es realizar un examen histopatológico, y descartar una causa sistémica.

Palabras clave:
Pituitaria
Granuloma
Hipofisitis
Adenoma
Imágenes de resonancia magnética

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