Abstract
Congenital mesoblastic nephroma (CMN) is a rare renal tumor of infancy. Complete surgical excision is often sufficient. A premature neonate underwent left radical nephrectomy for CMN without any adjuvant therapy. Pathology was consistent with cellular type CMN. Six months postoperatively, the patient developed recurrence. He subsequently underwent re-excision without any adjuvant chemotherapy. The baby is tumor free for more than a year.
Highlights
Congenital mesoblastic nephroma (CMN) is generally considered a benign tumor.[1]
We report a case of recurrent congenital mesoblastic nephroma treated with surgery alone
The more aggressive behavior has been observed in the cellular variant with more risk of recurrence and metastasis.[1,2]
Summary
Congenital mesoblastic nephroma (CMN) is generally considered a benign tumor.[1]. Nephrectomy is usually curative and adjuvant treatment is not necessary.[1]. Abdominal ultrasonography suggested a heterogenous tumor arising from the left kidney. CT scan revealed left sided kidney mass measuring 55*51mm (Fig.). The patient was operated and a left radical nephroureterectomy was performed (Fig.). The patient was operated and a left radical nephroureterectomy was performed (Fig.3) Histopathology confirmed it a cellular type of CMN. Due to the complete resection, adjuvant chemotherapy was not given. An ultrasound of the abdomen and pelvis was performed and it was reported as normal. 6 months postoperatively, abdominal ultrasonography showed a large intraperitoneal heterogeneous mass. Abdominal CT scan showed a large mass occupying left and central abdomen (Fig.). Re-excision of the recurrent mass was performed. The baby is 18 months old, with no signs of tumor recurrence on imaging.
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