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Mucinous tubular and spindle cell carcinoma (MTSCC) of the kidney: a detailed study of radiological, pathological and clinical outcomes.

Abstract：

OBJECTIVE:To characterise the clinical, radiological and histological features of mucinous tubular and spindle cell carcinoma (MTSCC), as well as oncological outcomes. PATIENTS AND METHODS:This is a single institution retrospective analysis of all patients with MTSCC from 2002 to 2011. Patients were excluded if MTSCC could not be confirmed on pathology re-review (four patients). Clinical characteristics, pathology, imaging, and outcomes were reviewed for the 19 included patients. RESULTS:The median (range) age at diagnosis was 59 (17-71) years with a female predominance (78.9%). On contrast-enhanced computed tomography, MTSCC enhanced less than the cortex during the corticomedullary phase. The mean (range) tumour attenuation was 36 (24-48), 67 (41-133), 89 (49-152), and 76 (52-106) Hounsfield units in the pre-contrast, corticomedullary, nephrographic and excretory phases, respectively. In all, 16 patients were treated with partial (five patients) or radical nephrectomy (11) for pT1 (62.5%), pT2 (31.3%), and pT3a disease (6.3%). One patient underwent active surveillance. Of three patients (13.0%) managed with energy ablation, there was one recurrence that was treated with salvage surgery. One patient (5.3%) had metastatic disease at diagnosis and died from disease 64.7 months later. A patient with a pT2bN0M0 MTSCC with sarcomatoid dedifferentiation developed bone metastases 9.5 months after diagnosis and was alive at 19.0 months. The remainder were free of recurrence or progression. CONCLUSION:MTSCC is a rare renal cell carcinoma (RCC) variant. In this largest series to date, MTSCC presented at a broad range of ages and displayed a female predilection. Imaging and pathological features of MTSCC display some overlap with papillary RCC. MTSCC is associated with excellent outcomes overall, but is not universally indolent.

journal_name

BJU Int

journal_title

BJU international

authors

Kenney PA,Vikram R,Prasad SR,Tamboli P,Matin SF,Wood CG,Karam JA

doi

10.1111/bju.12992

subject

Has Abstract

pub_date

2015-07-01 00:00:00

pages

85-92

issue

eissn

1464-4096

issn

1464-410X

journal_volume

116

pub_type

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Mucinous tubular and spindle cell carcinoma (MTSCC) of the kidney: a detailed study of radiological, pathological and clinical outcomes.