25. Wilms tumor: Difference between revisions

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(Created page with "'''Organ''': Kidney '''Description''': A greyish, lobulated tumor with no well-defined border can be seen. '''Diagnosis''': Wilms tumor = nephroblastoma '''Causes''': * Sporadic (majority) * Genetic syndromes like WAGR syndrome, Denys-Drash syndrome '''Theory''': Wilms tumor is the most common malignant kidney tumor in childhood, although it can occur in adulthood as well. The tumor is ''triphasic'', meaning it has three different “parts” histologically: # E...")
 
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'''Organ''': Kidney
[[File:Wilms tumour prep.jpg|thumb|Wilms tumour prep]]'''Organ''': Kidney


'''Description''':
'''Description''': A greyish, lobulated tumor with no well-defined border can be seen.
 
A greyish, lobulated tumor with no well-defined border can be seen.


'''Diagnosis''': Wilms tumor = nephroblastoma
'''Diagnosis''': Wilms tumor = nephroblastoma
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'''Theory''':
'''Theory''':


Wilms tumor is the most common malignant kidney tumor in childhood, although it can occur in adulthood as well.
Wilms tumor is the most common malignant kidney tumor in childhood, although it can occur in adulthood as well. The tumor is ''triphasic'', meaning it has three different “parts” histologically:
 
The tumor is ''triphasic'', meaning it has three different “parts” histologically:


# Epithelial part
# Epithelial part
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# Blastema part
# Blastema part


The blastema part is the most important clinically. A higher proportion of the blastema part compared to the other parts equals a poorer diagnosis.
The blastema part is the most important clinically. A higher proportion of the blastema part compared to the other parts equals a poorer diagnosis. The greyish foci can be necrosis but it’s impossible to know for sure without histology.
 
The greyish foci can be necrosis but it’s impossible to know for sure without histology.
[[File:Wilms tumour prep.jpg|center|thumb|Wilms tumour prep]]
[[Category:Pathology 2 - Macropreparations]]
[[Category:Pathology 2 - Macropreparations]]

Latest revision as of 12:47, 7 July 2024

Wilms tumour prep

Organ: Kidney

Description: A greyish, lobulated tumor with no well-defined border can be seen.

Diagnosis: Wilms tumor = nephroblastoma

Causes:

  • Sporadic (majority)
  • Genetic syndromes like WAGR syndrome, Denys-Drash syndrome

Theory:

Wilms tumor is the most common malignant kidney tumor in childhood, although it can occur in adulthood as well. The tumor is triphasic, meaning it has three different “parts” histologically:

  1. Epithelial part
  2. Stromal part
  3. Blastema part

The blastema part is the most important clinically. A higher proportion of the blastema part compared to the other parts equals a poorer diagnosis. The greyish foci can be necrosis but it’s impossible to know for sure without histology.