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[Congenital mesoblastic nephroma with multiple cysts].

Mourad Hamzaoui1, Afif Essid, Manef Gasmi

  • 1Service de Chirurgie Pédiatrique A, place Bab Saadoune, 1006 Tunisie. mourad.hamzaoui@rns.tn

Progres En Urologie : Journal De L'Association Francaise D'Urologie Et De La Societe Francaise D'Urologie
|August 28, 2003
PubMed
Summary

Mesoblastic nephroma, a rare benign congenital tumor, mimics Wilms tumor clinically. Surgical removal offers a favorable prognosis with a 98% survival rate for this rare pediatric abdominal mass.

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Area of Science:

  • Pediatric Oncology
  • Congenital Diseases
  • Surgical Pathology

Background:

  • Mesoblastic nephroma is a rare, benign congenital renal tumor.
  • It presents similarly to Wilms tumor, a common pediatric malignancy.
  • First described by Bolande in 1967, it requires accurate diagnosis.

Observation:

  • A 6-month-old infant presented with a large abdominal mass.
  • Radiological imaging suggested an intrarenal retroperitoneal tumor, possibly Wilms tumor.
  • The tumor was predominantly cystic, occupying a significant portion of the abdominal cavity.

Findings:

  • Histological examination revealed a fibrous tumor of spindle cells, confirming mesoblastic nephroma.
  • Intracystic hemorrhage was noted as an associated feature.

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  • Radical ureteronephrectomy was the chosen surgical intervention.

    • Implications:

    • Accurate differentiation between mesoblastic nephroma and Wilms tumor is crucial for appropriate management.
    • Surgical resection is the definitive treatment for mesoblastic nephroma.
    • The favorable prognosis underscores the importance of early diagnosis and surgical intervention.