Inflammatory myofibroblastic tumor of the kidney misdiagnosed as renal cell carcinoma

• Published in: Journal of Korean medical science Vol. 25; no. 2; pp. 330 - 332
• Main Authors: Ryu, Kwang Ho, Im, Chang Min, Kim, Myung Ki, Kwon, Dongdeuk, Park, Kwangsung, Ryu, Soo Bang, Choi, Chan
• Format: Journal Article
• Language: English
• Published: Korea (South) The Korean Academy of Medical Sciences 01-02-2010; 대한의학회
• Subjects: Actins - metabolism; Carcinoma, Renal Cell - diagnosis; Carcinoma, Renal Cell - pathology; Case Report; Diagnosis, Differential; Diagnostic Errors; Female; Granuloma, Plasma Cell - diagnosis; Granuloma, Plasma Cell - pathology; Granuloma, Plasma Cell - surgery; Humans; Kidney Neoplasms - diagnosis; Kidney Neoplasms - pathology; Magnetic Resonance Imaging; Middle Aged; Tomography, X-Ray Computed; Vimentin - metabolism; 의학일반; Granuloma, Plasma Cell; Kidney Neoplasms; Inflammation
• ISSN: 1011-8934; 1598-6357
• DOI: 10.3346/jkms.2010.25.2.330

The inflammatory myofibroblastic tumor (IMT), also knowns as inflammatory pseuduotumor, is a soft tissue lesion of unknown etiology. In the urogenital tract, IMT mainly affects the urinary bladder or prostate, but rarely the kidney. It has been considered as a nonneoplastic reactive inflammatory lesion, but nowadays, it is regarded as a neoplasm due to its high recurrence rate and metastasis. We describe a case of a 61-yr-old woman that had originally been misdiagnosed as renal cell carcinoma, which was pathologically revealed to be an IMT.