Barw Barw Medical Journal 2960-1959 3 2 2025 03 10 Kikuchi-Fujimoto Disease Coexistent with Papillary Thyroid Carcinoma: A Report of Two Cases 10.58742/bmj.v3i2.167 eng Ari M. Abdullah Department of Pathology, Sulaymaniyah Teaching Hospital, Sulaymaniyah, Iraq. ariabdullah1978@gmail.com Aras J. Qaradakhy Department of Radiology, Shorsh Teaching Hospital, Sulaymaniyah, Iraq. aras.qaradakhy@gmail.com Yadgar A. Saeed Scientific Affairs Department, Smart Health Tower, Madam Mitterrand Street, Sulaymaniyah, Iraq. yadgar.saeed@gmail.com Aso S. Muhialdeen Scientific Affairs Department, Smart Health Tower, Madam Mitterrand Street, Sulaymaniyah, Iraq. aso.muhialdeen@gmail.com Rebaz O. Mohammed Scientific Affairs Department, Smart Health Tower, Madam Mitterrand Street, Sulaymaniyah, Iraq. rebaz.mohammed@gmail.com Hiwa O. Baba Scientific Affairs Department, Smart Health Tower, Madam Mitterrand Street, Sulaymaniyah, Iraq. hiwa.baba34@gmail.com Abdulwahid M. Salih Scientific Affairs Department, Smart Health Tower, Madam Mitterrand Street, Sulaymaniyah, Iraq. abdulwahd.salih@gmail.com Abdullah A. Qadir Scientific Affairs Department, Smart Health Tower, Madam Mitterrand Street, Sulaymaniyah, Iraq. abdullah.qadir@gmail.com Rezheen J. Rashid Radiology Department, Hiwa Hospital, Sulaymaniyah, Iraq. rezheen.rashid@gmail.com Fahmi H. Kakamand College of Medicine, University of Sulaimani, Madam Mitterrand Street, Sulaymaniyah, Iraq. fahmi.hussein@univsul.edu.iq 2025 02 05 Abstract Introduction Kikuchi-Fujimoto Disease (KFD), characterized by histiocytic necrotizing lymphadenitis, is a rare condition of unknown etiology. Diagnosis is dependent on lymph node biopsy. Despite its self-limiting nature, accurate identification is essential to exclude more serious conditions. This paper reports on two cases of KFD coexisting with papillary thyroid carcinoma (PTC). Case presentation Two cases of KFD related to papillary thyroid carcinoma (PTC) are described. In Case 1, a 25-year-old woman experienced submental swelling, fever, and exhaustion. Subsequent tests revealed a thyroid lesion and cervical lymphadenopathy, which were confirmed as PTC and KFD. In Case 2, a 39-year-old female patient had right neck swelling, prompting a complete thyroidectomy that revealed papillary thyroid cancer with KFD in cervical lymph nodes. Conclusion The conclusion emphasizes the importance of considering KFD while highlighting its masquerading nature and the unique scenario of its coexistence with PTC.