Hamartoma of the spleen

Area of Science:

• Pathology
• Oncology
• Radiology

Background:

• Splenic hamartoma is a rare, benign vascular proliferation.
• Often discovered incidentally during investigations or autopsy.
• Women are more prone to symptomatic mass effects from splenic hamartoma.

Purpose of the Study:

• To describe the clinical, radiologic, and histologic features of splenic hamartoma.
• To highlight key diagnostic markers for differentiating splenic hamartoma from other vascular lesions.
• To emphasize the importance of correlating multiple diagnostic modalities.

Main Methods:

• Review of clinical presentations and imaging findings.
• Histopathologic examination of splenic tissue.
• Immunohistochemical analysis, focusing on CD8 expression.

Main Results:

• Splenic hamartomas exhibit unorganized vascular channels and disorganized stroma.
• Endothelial cells are similar to normal splenic sinuses.
• CD8 positivity in endothelial cells is a distinguishing feature.

Conclusions:

• Accurate diagnosis of splenic hamartoma requires integrating clinical, radiologic, and histologic data.
• CD8 immunostaining is vital for distinguishing hamartoma from other splenic vascular lesions.
• Avoiding misdiagnosis of splenic hamartoma as malignancy is critical.