PHILIPS每日一例:下腹部肿物伴间断性疼痛,是何原因?

2022-09-16 放射沙龙 医学影像学杂志

腹膜播散性平滑肌瘤病是一种罕见的良性肿瘤。临床症状及体征无特异性,术前误诊率高达100%。该病超声检查可发现较大的病灶,彩色多普勒可显示肿瘤血供情况。

患者女,43岁。下腹部肿物伴间断性疼痛2年余。患者于2年前无意中触及下腹部一肿物伴间断性疼痛,因肿物较小,疼痛症状不重未予治疗,近半年来肿物增大明显且疼痛较前明显加重。

体格检查:下腹部隆起并触及一巨大包块约15 cm×8 cm,有轻压痛,活动度良好,无压痛反跳痛,无液波震颤,肝脾肋下未触及,墨菲氏征(-),双肾未触及。超声检查:下腹部巨大实性肿物,性质待定。

CT检查:胃左动脉及脾动脉可见分支血管于胃大弯前方相互缠绕、旋转向下走行,可见分支动脉供应下腹部肿块,较大肿块大小约15.4 cm×13.6 cm×9.4 cm,边界较清晰,肿块内密度不均匀,增强扫描可见明显不均匀强化,周围并可见伴行静脉,肿块上方可见多发较小软组织密度肿块影,强化方式于较大者类似,膀胱受压变形(图1~4),肝脏大小、形态、密度无异常,肝内外胆管无扩张,脾、胆囊、胰腺大小形态及密度正常,双侧肾脏对称,大小及形态正常。

CT诊断:下腹部占位性病变,考虑为恶性,伴腹腔多发转移。手术及病理:腹腔探查见淡血性腹水少量,大网膜远端分别见一大小约16 cm×10 cm×8 cm肿物和3个直径约2 cm肿物,质硬,活动度好,较大肿物由多根血管和束带与大网膜连接,左中腹壁壁层腹膜有一大小约4 cm×5 cm×5 cm肿物,各肿物与邻近脏器均无浸润,切除肿物送病理。

病理诊断:(大网膜、腹壁)多发性平滑肌瘤。

讨论:

腹膜播散性平滑肌瘤病是一种罕见的良性肿瘤。临床症状及体征无特异性,术前误诊率高达100%。该病超声检查可发现较大的病灶,彩色多普勒可显示肿瘤血供情况;CT检查可显示肿瘤的大小、密度、数量,增强扫描可显示其增强方式及血供情况。

此例患者,肿瘤数目为多发,且大小不等,较大肿块与较小肿块大小相差悬殊是术前影像学误诊的主要原因。本病具有良性的组织学特征,预后好,本病虽属良性病变,但有恶性倾向,所以早发现,早手术治疗是根本,术后应定期随防。

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    2022-03-15 Homburg
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    2022-03-04 LSJ120
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    2022-10-21 TZF0811
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    2021-11-10 chengjn