Multi-modality imaging findings of splenic hamartoma: a report of nine cases and review of the literature

Purpose To investigate the presentation of splenic hamartomas (SHs) on ultrasonography (US), CT and MRI. Methods Nine patients (5 males and 4 females, mean age, 52.8 years) with pathologically proven SHs were included in this study. US, CT and MRI images were analyzed retrospectively, and imaging fe...

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Published in:	Abdominal imaging 2013-02, Vol.38 (1), p.154-162
Main Authors:	Wang, Jian-hua, Ma, Xiao-long, Ren, Fang-yuan, Zuo, Chang-jing, Tian, Jian-ming, Wang, Zhi-feng, Zheng, Jian-ming
Format:	Article
Language:	eng
Subjects:	Age Calcification Computed tomography Contrast Media Diagnosis, Differential Diagnostic Imaging Female Gadolinium DTPA Gastroenterology Hamartoma - diagnosis Hamartoma - pathology Hepatology Humans Imaging Literature reviews Magnetic resonance imaging Male Medicine Medicine & Public Health Middle Aged Neoplasia Nodules Radiology Spleen Splenic Diseases - diagnosis Splenic Diseases - pathology Ultrasonography Ultrasound
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Summary:	Purpose To investigate the presentation of splenic hamartomas (SHs) on ultrasonography (US), CT and MRI. Methods Nine patients (5 males and 4 females, mean age, 52.8 years) with pathologically proven SHs were included in this study. US, CT and MRI images were analyzed retrospectively, and imaging features were correlated with pathological findings. Results SHs appeared solitary lesion ( n = 8) and multiple lesions ( n = 1) in the present study. (1) In 8 cases of solitary lesion, the lesions appeared as solid nodules or masses with well-defined margins and varying echogenicity (hyperecho = 5, hypoecho = 2, strong echo = 1) on ultrasound. The lesions showed iso-attenuation ( n = 3) or slightly hypo-attenuation ( n = 4) on unenhanced CT, and calcification were revealed in 3 lesions. MRI showed isointensity ( n = 3) or hypointensity ( n = 2) on the T1-weighted image, and heterogeneous hypointensity ( n = 2), slightly hyperintensity ( n = 2) and hyperintensity ( n = 1) on the T2-weighted image. The enhanced patterns of SHs showed mild diffuse heterogeneous enhancement ( n = 6) and prominent enhancement ( n = 1) during arterial phase and above 7 lesions were demonstrated progressive enhancement at delayed phase on enhanced CT. One lesion without any enhancement was revealed in another patient. (2) One case of multiple lesions included 1 cystic lesion with irregular calcification and 7 solid lesions with progressive enhancement on CT images. Conclusions Combination of a variety of imaging modalities could more fully reflect the pathological characteristics and contribute to the diagnosis of SH.
ISSN:	0942-8925 1432-0509