Publicado

2023-05-09

Seudotumor ureteral por enfermedad relacionada con IgG4. Reporte de caso

IgG4-related inflammatory pseudotumor of the ureter: Case report

DOI:

https://doi.org/10.15446/cr.v9n1.95562

Palabras clave:

Informes de casos, Enfermedad relacionada con inmunoglobulina G4, Enfermedades ureterales (es)
Case Reports, Immunoglobulin G4-Related Disease, Ureteral Diseases (en)

Autores/as

Resumen

Introducción. La enfermedad relacionada con inmunoglobulina G4 (IgG4-RD, por sus siglas en inglés) es una condición poco común que causa lesiones fibroinflamatorias en casi cualquier órgano y se caracteriza histológicamente por un infiltrado linfoplasmocitario asociado a fibrosis y células plasmáticas con marcador positivo para inmunoglobulina G4 (IgG4). En casos de IgG4-RD la afectación del tracto urinario es inusual y puede imitar una patología oncológica. El manejo de esta enfermedad se basa en glucocorticoides e inmunomoduladores, requiriendo manejo quirúrgico en algunos casos.

Presentación del caso. Mujer de 55 años con dolor lumbar, infección urinaria e hidronefrosis. El estudio radiológico evidenció una masa en el tercio distal del uréter izquierdo. Se realizó una ureterectomía con estudio histopatológico que confirmó un seudotumor ureteral por IgG4-RD.

Conclusiones. La IgG4-RD es una condición inusual, más aún con manifestaciones urológicas, por lo que es importante incluirla en el diagnóstico diferencial de tumores ureterales, ya que puede simular características clínicas e imagenológicas de una patología neoplásica con desenlaces adversos.

Abstract

Introduction: Immunoglobulin G4-related disease (IgG4-RD) is a rare condition that causes fibroinflammatory lesions in almost any organ. It is characterized histologically by lymphoplasmacytic infiltrates with fibrosis and IgG4-positive plasma cells. Urinary tract involvement is uncommon and may mimic an oncologic disease. Treatment is based on glucocorticoids and immunomodulators, with surgical interventions required in selected cases.

Case presentation: A 55-year-old woman who presented with lumbar pain, urinary tract infection, and hydronephrosis. Radiologic study showed a mass located in the left distal ureter. Ureterectomy was required, confirming a histologically IgG4-related inflammatory pseudotumor of the ureter.

Conclusion: IgG4-related disease is a relatively rare condition, and urogenital manifestations are even less common. It is important to include this condition within the differential diagnosis of ureteral tumors, considering that it has clinical and radiologic features that may mimic ureteral neoplasm.

Referencias

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Cómo citar

González-Arboleda, A. A., Duque-Galán, M., Orrego-Rojas, P. A., & Jiménez-Guerrero, C. A. (2023). Seudotumor ureteral por enfermedad relacionada con IgG4. Reporte de caso. Case Reports, 9(1). https://doi.org/10.15446/cr.v9n1.95562