Diffuse large B-cell lymphoma (DLBCL) is the most common type of malignant lymphoma (ML), accounting for 30%-40% of cases of non-Hodgkin's lymphoma (NHL) in adults. Primary paranasal sinus lymphoma is a rare presentation of extranodal NHL that accounts for only 0.17% of all lymphomas. ML from the maxillary sinus (MS) is a particularly rare presentation, and is thus often difficult to diagnose. We have reported the first known case of DLBCL originating from the MS with rapidly occurrent multiple skin metastasis.

中文翻译：

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起源于上颌窦皮肤转移的弥漫性大 B 细胞淋巴瘤：1 例报告并文献复习。

弥漫性大 B 细胞淋巴瘤 (DLBCL) 是最常见的恶性淋巴瘤 (ML) 类型，占成人非霍奇金淋巴瘤 (NHL) 病例的 30%-40%。原发性鼻窦淋巴瘤是结外 NHL 的一种罕见表现，仅占所有淋巴瘤的 0.17%。来自上颌窦 (MS) 的 ML 是一种特别罕见的表现，因此通常难以诊断。我们报道了第一个已知的源自 MS 的 DLBCL 病例，并迅速发生多发性皮肤转移。