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World J Pediatr ; 7(3): 274-6, 2011 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-21822996


BACKGROUND: Botryoid Wilms' tumor is a rare kind of Wilms' tumor. We report two cases of this tumor. METHODS: Case 1, a 2-year-old boy, was admitted with macrohematuria for 5 months. Case 2, a 19-month-old boy, was referred for a palpable abdominal mass. The two cases were checked by 64-row multi-slice spiral CT (MSCT) and scanned with the dynamic contrast enhancement. The masses were excised and pathologically confirmed. RESULTS: In case 1, the mass occurred in the renal pelvis and calyx bilaterally, with heterogeneous density and prominent calcification. By contrast enhanced CT scan, the mass was mildly enhanced. In case 2, the left renal pelvis and ureter were filled with the tumor. Unenhanced scan revealed that the mass was homogeneous and non-calcified. In contrast, the mass was slightly and heterogeneously enhanced. Macroscopically, the mass filled in the pelvicalyceal system and had a botryoid appearance. Microscopically, the typical features of Wilms' tumor with blastemal, epithelial, and stromal components were evident. CONCLUSION: Botryoid Wilms' tumor should be included in the differential diagnosis of tumors in the pelvicalyceal system no matter it is unilateral or bilateral.

Neoplasias Renais , Tumor de Wilms , Pré-Escolar , Humanos , Lactente , Neoplasias Renais/diagnóstico , Neoplasias Renais/cirurgia , Masculino , Tumor de Wilms/diagnóstico , Tumor de Wilms/cirurgia
Hepatobiliary Pancreat Dis Int ; 1(1): 68-71, 2002 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-14607626


OBJECTIVES: To evaluate the value of the arterial Phase (AP) of biphase enhanced spiral CT (SCT) in the diagnosis of small HCC and to investigate the criteria, initial time, ending time and duration of AP. METHODS: From May 1995 to March 1999, patients with small HCC proved surgically and pathologically including 49 patients (n=53) in group A, 148 (n=186) in group B and 52 (n=52) in group C were collected. Biphase dynamic enhanced SCT scans were performed in all patients of the three groups and additional single-level dynamic scans only done in the group C. The detectability, diagnostic accuracy of lesions and enhancement of the lesions in AP were analyzed statistically. In addition, the initial time, ending time and duration of AP were measured. RESULTS: The results of the group A showed the detectability of small HCC was 88.68% in AP and 90.57% in both Phases, higher than those by ultrasound. Markedly enhanced lesions in AP accounted for 76% and 78% in the groups B and C respectively. The initial time, ending time and duration of AP measured on single-level dynamic scans were 16.9 s, 39.6 s and 22.7 s on average respectively. CONCLUSIONS: The biphase dynamic SCT especially its arterial phase appears to be very valuable in diagnosing small HCCs. In light of short duration of AP, understanding and strict control of AP is obviously imperative.

Carcinoma Hepatocelular/diagnóstico por imagem , Neoplasias Hepáticas/diagnóstico por imagem , Tomografia Computadorizada por Raios X/métodos , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos