Sarcoma-associated sarcoid reaction: Report of cutaneous sarcoid reaction in a patient with liposarcoma

Sarcoidosis is a systemic inflammatory condition in which noncaseating epithelioid cell granulomas appear within one or several body sites. Sarcoid reaction(also referred to as sarcoidal or sarcoid-like reaction) occurs in patients who do not fulfill the diagnostic criteria for systemic sarcoidosis but present with similar clinical and histological features. As sarcoma-associated sarcoid reactions are rare, we describe the features of sarcoid reaction that developed in a man with liposarcoma and summarize reports of other oncology patients with sarcoma-associated sarcoid reactions. A 68-yearold man with retroperitoneal liposarcoma presented for evaluation of erythematous dermal plaques on his left leg. Microscopic examination of a tissue specimen revealed multiple epithelioid granulomas in the superficial and mid-reticular dermis. Correlation of the clinical presentation and histopathologic findings established a diagnosis of liposarcoma-associated cutaneous sarcoid reaction. Sarcoid reactions have been described in only seven individuals with sarcoma, including two patients with leiomyosarcoma and one patient with either carcinosarcoma, Kaposi sarcoma, liposarcoma, malignant peripheral nerve sheath tumor, rhabdosarcoma, or synovial sarcoma. Sarcoidal granulomas most commonly develop within the locoregional draining lymph nodes. Sarcoid reactions may also affect other organs, such as the lungs, skin, and spleen.

消化道癌引流淋巴结结节病样反应的临床病理特征及鉴别诊断

目的:观察消化道癌引流淋巴结结节病样反应的临床病理特征及鉴别诊断要点,避免误诊误治。方法:搜集2例食管癌、2例胃癌及4例结直肠癌伴引流区淋巴结结节病样反应共8例,同时分析其原发癌组织学特点,淋巴结均行抗酸染色及免疫组织化学染色,结合随访结果进行预后分析。结果:8例消化道癌引流区淋巴结出现结节病样反应中,患者既往无结核、结节病病史,光镜下显示淋巴结结构破坏,代之大小不等、境界清楚的结节状病灶,中央无干酪样坏死,抗酸染色阴性,免疫组化染色显示CD68及溶菌酶阳性表达,CK及CEA均阴性表达。结论:癌引流区淋巴结结节病样反应可能为机体对肿瘤细胞或其坏死产物的一种免疫反应,伴淋巴结结节病样反应且无淋巴结癌转移的患者预后较好。