title: Renal cell carcinoma presented as fever of unknown origin: report of one case.
abstract: A 10-year-old girl, with an intermittent fever for 15 days, visited our emergency department. Initial work-up revealed no signs of infection and no palpable abdominal mass. KUB showed only displaced bowel gas. Abdominal ultrasound was performed which disclosed a huge mass at the lower pole of the right kidney. Abdominal computed tomography (CT) confirmed a huge, heterogeneous mass arising from the right kidney and without involvement of regional lymph nodes and inferior vena cava. Radical nephrectomy was performed and Stage 2 renal cell carcinoma (RCC) was confirmed. Fever subsided spontaneously after operation. No local recurrence or distant metastasis was detected in the following 3 years. Thus, occult malignant neoplasm as infrequent as RCC should be in the list of differential diagnoses of fever of unknown origin (FUO). An abdominal ultrasound is a useful screening tool for early diagnosis of RCC.
authors.affiliation: Department of Pediatrics, Division of Pediatric Nephrology, Chang Gung Memorial Hospital at Kaohsiung, Kaohsiung Hsien, Taiwan.
authors.forename: Chih-Chong
authors.initials: CC
authors.lastname: Lin
authors.forename: Jiunn-Ming
authors.initials: JM
authors.lastname: Sheen
authors.forename: Chie-Song
authors.initials: CS
authors.lastname: Shieh
authors.forename: Shun-Chen
authors.initials: SC
authors.lastname: Huang
authors.forename: Kao-Pin
authors.initials: KP
authors.lastname: Hwang
mesh_terms: D002292:Carcinoma, Renal Cell / Q000150:complications* / Q000175:diagnosis / Q000473:pathology; D002648:Child; D005260:Female; D005335:Fever of Unknown Origin / Q000209:etiology*; D006801:Humans; D007680:Kidney Neoplasms / Q000150:complications* / Q000175:diagnosis / Q000473:pathology