Epidemiological and histological characteristics of cutaneous squamous cell carcinoma and its precursor lesions – A single-center study

Abstract Objective: Cutaneous squamous cell carcinoma (cSCC) is a skin malignancy that is one of the non-melanocytic skin cancers (NMSCs). The objective of our study was to highlight the epidemiological and histological characteristics of cSCC diagnosed in a clinical county hospital. Methods A retrospective cross-sectional study was performed of histopathologically diagnosed cases of cSCC from the clinical Pathology Department of the Mures Clinical County Hospital, Târgu Mureș, Romania. We included 96 cases that were diagnosed between January 1, 2017, and December 31, 2020. Results: Of the 96 cases included in the study, 82 were identified as cSCC, 5 as Bowen Disease, and 9 as keratoacanthoma. The majority of the cases were diagnosed in 2018 (n = 30; 31.25%) and 2019 (n=36; 37.50%). The median age of the patients was 63.0 years. Slightly over half of the patients were male (n=50; 52.08) and 49 patients (51.04%) grew up in urban areas. Forty-six cases (56.10%) were well differentiated; 25 (30.49%) moderately differentiated, and 11 (13.41%) poorly differentiated. Almost all of the lesions (93; 96.88%) were removed within the safety excision margins. Conclusion: Most of the patients were diagnosed with cSCC in 2018 and 2019 and were over 70 years old. The majority were males who grew up in urban areas. Even though most of the lesions were well differentiated and completely excised surgically, the differential diagnoses between cSCC and other skin malignancies were made based on the morphological aspects of the lesions, followed by an immunohistochemical profile when necessary.