Korean J Med.  2015 May;88(5):587-592. 10.3904/kjm.2015.88.5.587.

A Case of Metastatic Papillary Renal Cell Carcinoma Mimicking a Renal Abscess

• Kim YW
• Kim YS
• Ji EY
• Kim JH
• Jun SY
• Shin SJ
• Yoon HE

• KMID: 1834049
• DOI: http://doi.org/10.3904/kjm.2015.88.5.587

Abstract

Papillary renal cell carcinoma (PRCC), a histological subtype of renal cell carcinoma (RCC), accounts for approximately 10% of all RCC. Here, we report a case of metastatic RCC diagnosed unexpectedly in a 31-year-old female patient. Computed tomography revealed a renal abscess in the left kidney and the urine culture confirmed Escherichia coli producing extended-spectrum beta-lactamase. Despite appropriate antibiotic treatment for 2 months, the patient's symptoms and radiological findings worsened and she underwent nephrectomy. Pathological examination confirmed type 2 PRCC and a further staging study found stage 4 (T3N1M1). Our findings indicate that malignancy should be considered in young patients with a bacteriologically confirmed urinary tract infection.

Keyword

Renal cell carcinoma; Pyelonephritis; Fever of unknown origin

MeSH Terms

Abscess*
Adult
beta-Lactamases
Carcinoma, Renal Cell*
Escherichia coli
Female
Fever of Unknown Origin
Humans
Kidney
Nephrectomy
Pyelonephritis
Urinary Tract Infections
beta-Lactamases