为评估在沙特阿拉伯利雅德的国王哈立德大学医院接受治疗的患者中黑色素瘤和非黑色素瘤皮肤癌的普遍程度。我们还评估了这些患者中最常见的皮肤癌类型。 方法：作者进行了一项回顾性研究，包括所有在（2007-2018）期间到国王哈立德大学医院 (KKUH) 接受治疗的患者（沙特阿拉伯和非沙特阿拉伯人）。数据收集自KKUH病理科档案，并分为两类：黑色素瘤皮肤癌 (MSC)、非黑色素瘤皮肤癌 (NMSC)，包括基底细胞癌 (BCC) 和鳞状细胞癌 (SCC)、肿瘤前病变和非肿瘤性皮肤病变。 结果：在9828例患者中，共有111例患者被报告患有皮肤癌，同时患有其他皮肤病理。大多数病例是基底细胞癌，占所有病例的76 (68.5%)。18例患者 (16.2%) 被诊断为 MSC。剩下的17例患者 (15.3%)被诊断为鳞状细胞癌。 结论：皮肤癌的患病率和发病率在全球范围内都在增加。在我们的研究中，基底细胞癌是我们医院报告的最常见的皮肤癌类型，这与大多数其他国际研究相似。

To assess the prevalence of melanoma and non-melanoma skin cancer for patients attended King Khalid University Hospital, Riyadh, Saudi Arabia. We are also assessing the most common category of skin cancer to be encountered among those patients. Methods: The authors conducted a retrospective study including all patients (Saudi and non-Saudi) who attended King Khalid University Hospital (KKUH) at the period of (2007-2018). Data were collected from archives of Pathology Department at KKUH and categorized into: melanoma skin cancer (MSC), non-melanoma skin cancer (NMSC), which included: basal cell carcinoma (BCC) and squamous cell carcinoma (SCC), pre-neoplastic lesions, and non-neoplastic skin lesions. Results: A total of 111 patients were reported to have skin cancer out of 9828 cases, which had other skin pathology. Majority of cases were basal cell carcinoma with a total number of 76 (68.5%) of all cases. 18 patients (16.2%) were diagnosed with MSC. The remaining 17 patients (15.3%) were diagnosed with squamous cell carcinoma. Conclusion: Skin cancer prevalence and incidence is increasing worldwide. In our study, BCC was the most common type of skin cancer to be reported in our institute, which is similar to the majority of other international studies.