Renal angiomyolipoma with epithelial cyst

Area of Science:

• Nephrology
• Pathology
• Radiology

Background:

• Angiomyolipoma with epithelial cysts (AMLEC) is an uncommon subtype of kidney angiomyolipomas.
• AMLEC is a benign renal tumor that frequently mimics renal cell carcinoma on imaging.
• Distinct histological and immunohistochemical features aid in the pathological diagnosis of AMLEC.

Purpose of the Study:

• To present a rare case of AMLEC in a young female.
• To highlight the diagnostic challenges posed by AMLEC, particularly its resemblance to renal cell carcinoma.
• To review the literature on AMLEC, including its differential diagnosis and characteristic features.

Main Methods:

• Case presentation of a 26-year-old female with a renal mass.
• Radiological assessment leading to a provisional diagnosis of renal cell carcinoma.
• Histopathological and immunohistochemical analysis for definitive diagnosis.
• Literature review of AMLEC.

Main Results:

• The patient's renal mass was provisionally diagnosed as renal cell carcinoma based on radiological findings.
• Histopathological examination confirmed the diagnosis of Angiomyolipoma with epithelial cysts (AMLEC).
• The case highlights the importance of considering AMLEC in the differential diagnosis of renal masses.

Conclusions:

• AMLEC is a rare benign entity that requires careful pathological evaluation to distinguish it from malignant renal tumors.
• Radiological features of AMLEC can be misleading, often suggesting renal cell carcinoma.
• Accurate diagnosis of AMLEC relies on distinct histological and immunohistochemical findings.