中年女性,上腹痛1年余,请诊断!

2019-12-27 不详 影像园

中年女性,上腹痛1年余,请诊断!

【所属科室】


【基本资料】

患者,女,41岁

【主诉】

上腹痛1年余

【查体】

左上腹可触及一包块,大小约4x7cm,质韧,压痛(+),与周围分界尚清,活动度欠佳,余(-)

【其他检查】

外院彩超提示:上腹部混合性回声包块(考虑来源于胰腺

【影像图片】

























【讨论问题】如何诊断

【讨论】

评论:左上腹较大占位,病变位于胰腺之间,跨过整个胰腺,同胰腺分界面清晰,胰腺明显受压后移,病变上缘与壁局部呈骑跨样接触,故定位倾向于胃壁来源。病灶内部呈囊实性改变,边缘见较多结节,增强扫描动脉期强化并不明显,门脉期及延迟期强化略趋于明显,故胃壁来源神经鞘瘤需要考虑。病灶同胰腺交界较广,胰腺来源不能完全除外,实性假乳头状瘤可以考虑。
 
【结果】

术中所见:肿块位于胰体尾部,直径约8cm,呈囊实性,边界尚清,与周围无明显粘连。
病理诊断:(胰体尾)结合免疫组化结果符合实性-假乳头状瘤
 
【病例小结】

胰腺实性假乳头状瘤(Solid pseudopapillary tumor of the pancreas, SPTP)是一种罕见且多为良性和低度恶性的肿瘤,仅占全部胰腺外分泌肿瘤的0.2%~2.7%。好发于年轻女性,主要症状为上腹部疼痛,少数无症状,体检时发现。SPTP是由肿瘤实性部分和囊性部分不同程度混合而成,其影像表现取决于肿瘤实性结构和囊性结构的比例和分布。

影像表现:可发生于胰腺的任何部位,以胰腺尾部多见。CT平扫呈密度低而不均匀的软组织肿块,境界清楚,不侵犯周围结构,肿瘤常有完整的厚的纤维包膜,出血和囊变表现更低密度区。可伴有钙化,常无分隔表现。增强扫描肿块轻度或中等度不均匀强化(乏血供肿瘤),中央囊性和坏死部分无强化。囊性结构为主或囊实结构比例相仿的肿瘤实性部分呈附壁结节,亦可以表现为略低或等密度的实性部分呈小片状漂浮在低密度囊性部分中,即“浮云征”,或囊性、实性部分相间分布。

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