GAMUT H-131
CYSTIC RETROPERITONEAL MASS (Ultrasound, CT, MRI)


COMMON
1. Abscess G (retroperitoneal or psoas )
2. Hematoma (late)
3. Hydronephrosis
4. Pseudocyst of pancreas 
5. Renal cystic disease (eg, simple cyst; polycystic kidney; multicystic dysplastic kidney; cystic renal cell carcinoma)


UNCOMMON
1. Cystadenoma or cystadenocarcinoma of pancreas
2. Cystic or necrotic para-aortic lymphadenopathy (eg, tuberculosis ; carcinoma of cervix; teratoma of testis)
3. Hemangiopericytoma
4. Hydatid cyst
5. Leiomyosarcoma 
6. Lymphangioma
7. Lymphocele
8. Meningocele
9. von Hippel-Lindau S.





References