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结直肠黑色素瘤:一种具有严重预后的罕见癌症
Khadija Soufi1, Ferheen Abbasi1, Dongguang Wei2
1Department of Oncology, Comprehensive Cancer Center, UC Davis, Sacramento, CA, USA.
Case reports in gastroenterology
|June 29, 2023
概括
恶性直肠黑色素瘤是罕见的和积极的,经常呈现模糊的症状. 这一案例凸显了由于检测迟到和侵入性传播的诊断挑战和不良结果.
科学领域:
- 在瘤学瘤学.
- 胃肠病学 胃肠病学
- 病理学 病理学 病理学
背景情况:
- 直肠恶性黑色素瘤是一种非常罕见且具有攻击性的癌症.
- 它占所有阳门癌症的4%,经常呈现非特异性症状,如门疼痛或直肠出血.
- 诊断是具有挑战性的,因为 amelanotic 呈现,导致预后不佳.
研究的目的:
- 为了呈现一种罕见的直肠黑色素瘤病例的放射和病理特征.
- 讨论这种侵袭性恶性瘤的诊断困难和治疗影响.
主要方法:
- 一个76岁的男性被诊断患有直肠黑色素瘤的病例报告.
- 对放射学和病理学发现的审查,包括免疫组织化学生物标志物 (c-KIT,SOX10,Melan-A,HMB-45,CD117).
主要成果:
- 这位患者出现了一块庞大的直肠质,最初怀疑是结肠直肠癌.
- 病理学证实了c-KIT+黑色素瘤与SOX10,Melan-A,HMB-45和CD117.7的积极表达.
- 尽管用伊马替尼布治疗,但黑色素瘤的广泛和侵略性导致疾病进展和死亡.
结论:
- 结直肠黑色素瘤是一种罕见的实体,具有具有挑战性的诊断和不良预后.
- 侵袭性局部侵袭和阿梅拉诺斯表现使手术切除和治疗复杂化.
- 生物标志物识别对于准确的诊断和向治疗至关重要,尽管在晚期疾病中结果仍然很差.
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