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Vol. 13. Issue 2.
Pages 137-141 (January 2002)
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Vol. 13. Issue 2.
Pages 137-141 (January 2002)
Hipofisitis granulomatosa idiopática. Estudio morfológico e inmunohistoquímico de una observación
Hypophysitis granulomatous idiopathic. Morphological and Immunohistochemical study. Case report.
C. Illueca*, M. Cerdá-Nicolás*,
, J. Ascaso**, A. Llombart-Bosch*
* Departamento de Patología. Hospital Clínico Universitario. Facultad de Medicina. Universidad de Valencia
** Departamento de Medicina. Endocrinología. Hospital Clínico Universitario. Facultad de Medicina. Universidad de Valencia
P. Roldan, F. Talamantes
Departamento de Cirugía. Neurocirugía. Hospital Clínico Universitario. Facultad de Medicina. Universidad de Valencia
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Resumen

Los procesos inflamatorios de la glándula hipofisaria constituyen un grupo de interés por su escasa frecuencia. Con frecuencia se presentan como lesiones ocupantes de espacio y cursan con cuadros de panhipopituitarismo. Ello platea problemas de diagnostico diferencial con implicaciones terapéuticas importantes

En este trabajo presentamos un caso de hipofisitis granulomatosa idiopática, en una paciente de 55 años con crisis diarias de cefalea y panhipopituitarismo y un aumento de tamaño de la glándula hipofisaria.

La morfología destaca una lesión inflamatoria granulomatosa no necrotizante, con células multinu-cleadas gigantes y un infiltrado linfoplasmocitario. El estudio inmunohistoquímico muestra la presencia de macrófagos (CD68+) y un infiltrado inflamatorio heterogéneo (CD45RO y CD20+).

Se analiza el diagnóstico diferencial con otros procesos granulomatosos infecciosos o no infecciosos y con la histiocitosis.

En la discusión examinamos la posible relación con la hipofisitis linfocitaria.

Palabras clave:
Hipofisitis granulomatosa idiopática
Inmunohistoquimia
Summary

Inflamatory diseases of the pituitary gland constitute a group of interest because of their scarce frequency, because the disorder presents with symtoms of hypopituitarism and expanding sellar mass and because of their therapeutics implications.

We present one case of idiopathic granulomatous hypophysitis, in a 55-years-old patient with daily headaches, panhypopituitarism and a sellar mass lesion.

Granulomatous hypophysitis is characterized by granulomas with epithelioid histiocytes and multinucleated giant cells but also shows lymphocyte collections.

With respect to immunohistochemistry our results show histiocytes (CD68+) and an heterogeneous inflammatory infiltrate (CD45RO+ y CD20+).

We analyze the differential diagnosis with another granulomatous processes, infectious or not infectious, and with the histiocytosis.

We examine the possible relation with the lymphocyte hypophysitis.

Key words:
Hypophysitis granulomatous idiopathic

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