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Open Access Highly Accessed Case Report

Renal mucinous tubular and spindle cell carcinoma: a report of 8 cases and review of the literature

Xiao-rong Wu1, Yong-hui Chen1, Jian-jun Sha1, Ling Zhao2, Ji-wei Huang1, Juan-jie Bo1, Dong-ming Liu1* and Yi-ran Huang1

Author Affiliations

1 Department of Urology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200001, China

2 Department of pathology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200001, China

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Diagnostic Pathology 2013, 8:206  doi:10.1186/1746-1596-8-206

Published: 11 December 2013

Abstract

Background

Mucinous tubular and spindle cell carcinoma of kidney (MTSCC-K) is a rare variant of renal tumor. The current data show most of MTSCCs are of low malignant potential and rare cases metastatic to lymph nodes have been reported; however, the recorded computed tomography (CT) and follow up data are limited.

Material and method

In the present study, we retrospectively analyzed CT and clinicopathological data of eight patients with renal MTSCC-K.

Results

A total of eight cases, including six females and two males, were included in this analysis with a mean age of 48.4 (range 25 to 81) years. Mean tumor size was 4.2 (range 2.5 to 10.0) cm. Preoperative CT demonstrated that all tumors were slightly enhanced on both corticomedullary and nephrographic phase, which was different from many other renal cell carcinomas. Three of them were treated with open radical nephrectomy, three with laparoscopic radical nephrectomy and the other two with laparoscopic partial nephrectomy. No postoperative therapy was applied. Patients were followed up for 15 to 64 months and there was no evidence of recurrence and metastasis.

Conclusions

The MTSCC-K has special clinicopathological characteristics, low degree of malignancy and relative good prognosis. The diagnosis mainly depends on the histopathological examination and CT may help to differentiate with papillary renal cell carcinoma. Surgical treatment is recommended and additional therapies are not necessary.

Virtual slides

The virtual slides for this article can be found here: http://www.diagnosticpathology.diagnomx.eu/vs/8435581771088249 webcite.

Keywords:
Renal cell carcinoma; Mucinous tubular and spindle cell carcinoma; Computed tomography