en Otorhinolaryngology Otorhinolaryngology case report case report <span style="font-size:13pt"><span style="text-justify:kashida"><span style="text-kashida:0%"><span style="text-autospace:none"><span style="font-family:&quot;Times New Roman&quot;,serif"><span style="font-style:italic"><b><span style="font-size:9.0pt"><span style="font-style:normal">Background: </span></span></b><span style="font-size:9.0pt"><span style="font-style:normal">Fibromatosis is a group of benign tumors originating from connective tissues of muscle, overlying fascia, periosteum, or aponeurosis. However, they might need several excisional resections, owing to compressive effects on adjacent vital structures. </span></span></span></span></span></span></span></span><br> <span style="font-size:13pt"><span style="text-justify:kashida"><span style="text-kashida:0%"><span style="text-autospace:none"><span style="font-family:&quot;Times New Roman&quot;,serif"><span style="font-style:italic"><span style="font-size:9.0pt"><span style="font-style:normal">&nbsp;&nbsp; <b>Case Report:</b> Here, we discussed a case of submandibular fibromatosis in a 3-year-old girl. She underwent a conservative surgical procedure without a wide mandible bone resection. She received no adjuvant therapy. The postoperative period was uneventful with an appropriate cosmetic and functional outcome. A 1-year follow-up revealed no recurrence. </span></span></span></span></span></span></span></span><br> <span style="font-size:13pt"><span style="text-justify:kashida"><span style="text-kashida:0%"><span style="text-autospace:none"><span style="font-family:&quot;Times New Roman&quot;,serif"><span style="font-style:italic"><span style="font-size:9.0pt"><span style="font-style:normal">&nbsp;&nbsp; <b>Conclusion: </b>Fibromatosis of the head and neck in children is a rare condition, which needs a multidisciplinary agreement for its appropriate management. A complete surgical removal often leads to a proper outcome. Adjuvant therapy should also be kept in mind for recurrent lesions not candidate for surgical removal or in case of remnant tumors. </span></span></span></span></span></span></span></span><br> &nbsp; Desmoid Tumor, Fibromatosis, Submandibular, Surgical Excision 711 714 http://mjiri.iums.ac.ir/browse.php?a_code=A-10-7562-1&slc_lang=en&sid=1 Shabahang Mohammadi Mohshab6@gmail.com 200319475328460072188 200319475328460072188 No Department of Otorhinolaryngology-Head & Neck Surgery, Firoozgar Hospital, Iran University of Medical Sciences, Tehran, Iran Saba Mohammadi Mohammadi.saba98@gmail.com 200319475328460072189 200319475328460072189 Yes School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran Farshad Khosraviani Farshad.khosraviani@g.ucla.edu 200319475328460072190 200319475328460072190 No University of California Los Angeles, School of Dentistry, California, USA