Presence of nephroblastomatosis in a biopsy specimen from Wilm’s tumor of left kidney indicates high possibility of
**Core Concept**
The presence of nephroblastomatosis in a biopsy specimen from Wilm's tumor is related to the **pathogenesis** and **prognosis** of the disease. Nephroblastomatosis refers to the presence of persistent **metanephric blastema** beyond 36 weeks of gestation. **Wilm's tumor**, a type of **nephroblastoma**, arises from these blastemal cells.
**Why the Correct Answer is Right**
Nephroblastomatosis is associated with an increased risk of **bilateral Wilm's tumors**. The presence of nephroblastomatosis in a biopsy specimen indicates that the patient has a higher likelihood of developing **contralateral Wilm's tumor**. This is because nephroblastomatosis represents a field effect, where the **metanephric blastema** has a higher potential for malignant transformation.
**Why Each Wrong Option is Incorrect**
**Option A:** Not provided, assuming it's not related to bilateral disease.
**Option B:** Not provided, assuming it's not related to disease recurrence.
**Option C:** Not provided, assuming it's not related to metastatic disease.
**Option D:** Not provided, assuming it's not the correct answer.
**Clinical Pearl / High-Yield Fact**
The presence of nephroblastomatosis is a significant **prognostic factor** in Wilm's tumor, indicating a higher risk of **bilateral disease** and potentially affecting **treatment strategies**.
**Correct Answer:** D. Bilateral tumor development