We present a case of a desmoid tumor recurrence in a patient with a history of a resected desmoid tumor of the right neck area with free surgical margins six months earlier. The neoplasm was found to invade the parapharyngeal space, and wide excision was performed including most of the sternocleidomastoid muscle (SCM), the thrombosed internal jugular vein (IJV), and the infiltrated spinal accessory nerve (SAN). The histopathologic findings displayed free microscopic margins, with close margins at the site of the parapharyngeal space extension. After 3 months, there was no sign of tumor recurrence. After 6 months, local tumor recurrence was identified on clinical examination and imaging. The decision of the Oncology Board was further treatment with radiotherapy (RT). Response to treatment was satisfactory, and the patient was on close follow-up for twelve months. Desmoid tumors are very rare benign neoplasms of mesenchymal origin with negligible mortality but high morbidity, due to their high recurrence rates, local tissue infiltration, and unpredictable disease course and response to treatment. No universally acceptable treatment protocols have been introduced to date. Appropriate patient counseling and close follow-up are warranted in all cases.

Background. Thyroglossal duct cysts (TDC) represent approximately 70 of all congenital neck masses, and up to 1 of them contain thyroid tissue malignancies. Clinical presentation of TDC carcinomas is usually indistinguishable from benign tumors preoperatively, and differential diagnosis can be challenging. We present a rare case of TDC carcinoma concurrent with thyroid cancer in an adolescent. Case Presentation. A 16-year-old Caucasian female, otherwise healthy, was referred with a painless, gradually expanding lump on the neck. Physical examination revealed a well-circumscribed, moderately hard, tender mass of the anterior neck midline anteroinferior to the hyoid bone. Imaging findings suggested TDC as the most likely diagnosis. The patient had a Sistrunk procedure under general anesthesia. Histopathological findings diagnosed a BRAF^V600E-positive papillary thyroid carcinoma (PTC) in a TDC. A thyroid gland and neck ultrasound revealed a highly suspicious finding for malignancy right level VI lymph node, which was not confirmed by fine needle aspiration cytology (FNAC). Under general anesthesia, total thyroidectomy and central compartment lymph node neck dissection were performed. Histopathological findings revealed a thyroid parenchymal locus of PTC, as well as three lymph nodes infiltrated by PTC. The patient received adjuvant radioactive iodine ablation (RAI) therapy and is closely followed. Conclusion. TDC carcinomas in conjunction with thyroid carcinomas in young patients are rare. Preoperative diagnosis can be challenging, as the vast majority of neck masses in young patients are benign in nature, and most malignant tumors lack specific clinical features. The diagnostic accuracy of FNAC is considered unsatisfactory due to its frequently cystic nature. Definitive diagnosis is based on histopathological findings. Clinicians should maintain a high level of suspicion for coexisting thyroid malignancies. Although surgical extirpation of the malignancy is considered standard of care, the treatment of TDC cancer should always be individualized by a multidisciplinary team.

Background. Lemierre syndrome (LS) is a rare complication of upper aerodigestive tract infections characterized by proximal and distal septic emboli, commonly including internal jugular vein (IJV) thrombosis. Diagnosis can be challenging, and treatment delays can result in increased patient morbidity and mortality. We present a rare case of LS with extensive thrombosis and multiple sites of distal infection and a narrative review of the literature. Case Presentation. A 52‐year‐old Caucasian male was transferred to the emergency department (ED) with an altered level of consciousness and clinical findings of acute bacterial pharyngotonsillitis. Medical history included cervical spine disorder and traumatic brain injury in the past, as well as the recent use of pain relievers due to acute cervical pain. Imaging studies revealed left IJV thrombosis that extended into multiple venous cerebral sinuses and infiltrates of the right lung. LS was considered the most likely diagnosis. The patient was intubated and transferred to the intensive care unit (ICU). Treatment included intravenous broad‐spectrum antibiotics and anticoagulation therapy. Response to treatment was satisfactory. After extubation, he was transferred to a ward and discharged with resolution of clinical and imaging findings. Conclusion. LS is a rare disease and may have an insidious course. Timely diagnosis and appropriate treatment strategies, mainly broad‐spectrum antibiotics, offer favorable outcomes in otherwise healthy individuals. The indications for anticoagulation therapy still remain controversial. Anticoagulants are usually administered to patients with extensive thrombosis. Surgical treatment includes abscess drainage, while IJV ligation and excision are reserved for nonresponders to medical treatment.