en آسيب شناسي Pathology گزارش مورد Case Report <div style="text-align: justify;"><span style="font-size:12px;"><span style="font-family:Times New Roman;"><b>Background:</b> Basal cell carcinoma is the most common skin cancer. It accounts for 80% of all non-melanoma skin cancers. It most commonly occurs in sun-exposed areas. 0.094% of the cases occur in the inguinal region.<br> <b>Case presentation:</b> A 70-year-old male presented with swelling in the left inguinal region for 6 months, diagnosed as malignant melanoma based on clinical and cytological features and finally as pigmented basal cell carcinoma by histopathology and immunohistochemistry.<br> <b>Conclusion</b>: All pigmented lesions are not melanoma. Pigmented basal cell carcinoma is an important differential diagnosis for malignant melanoma irrespective of the site, size, and clinical picture. We take this opportunity to reiterate the chances and reasons for the misdiagnosis of basal cell carcinoma in cytology smears.</span></span></div> Melanoma, Skin Cancers, Basal Cell Carcinoma, Hedgehog Signaling Pathway 16 18 http://mlj.goums.ac.ir/browse.php?a_code=A-10-1873-1&slc_lang=en&sid=1 Vidhya Venkatesan venkatesanvidhyaa@gmail.com 100319475328460032098 100319475328460032098 No Department of Pathology, Faculty of Dr Chandramma Dayananda Sagar Institute of Medical Education and Research, Dayananda Sagar University, Bengaluru, Karnataka, India Jessica Minal jes.minal@gmail.com 100319475328460032099 100319475328460032099 No Department of Pathology, Faculty of Dr Chandramma Dayananda Sagar Institute of Medical Education and Research, Dayananda Sagar University, Bengaluru, Karnataka, India Nikhil Pudhu Veetil nikhil.pv16@gmail.com 100319475328460032100 100319475328460032100 Yes Department of Pathology, PES University Institute of Medical Sciences and Research, Bengaluru, Karnataka, India Kanna Sandhyarani Mahadev doc.sandhyamadhu@gmail.com 100319475328460032101 100319475328460032101 No Department of Pathology, Faculty of Dr Chandramma Dayananda Sagar Institute of Medical Education and Research, Dayananda Sagar University, Bengaluru, Karnataka, India Archana Shetty archanashetty2924@gmail.com 100319475328460032102 100319475328460032102 No Department of Pathology, Faculty of Dr Chandramma Dayananda Sagar Institute of Medical Education and Research, Dayananda Sagar University, Bengaluru, Karnataka, India