UNASSIGNED: Commonly, the thyroid gland is regarded as an organ with fewer metastatic diseases, and colorectal metastasis to the thyroid (CMT) is rarely reported, especially, with that the clinical sign of thyroid metastasis nidus is the chief complaint. The CMT occurs in advanced colorectal cancer and is associated with poor prognosis and short survival.
UNASSIGNED: In this case, we reported a patient with the sign of neck mass as the first manifestation of CMT. The patient underwent a partial thyroidectomy in June 2019, immunohistochemical findings of thyroid carcinoma suggested the possibility of adenocarcinoma of gastrointestinal tract. The patient underwent a colonoscopy in July 2019 and a colonic mass was found. Pathological examination diagnosed rectal adenocarcinoma. The patient underwent neoadjuvant chemotherapy, surgical treatment, postoperative adjuvant chemotherapy and targeted therapy. The patient died in June 2022.
UNASSIGNED: The metastasis disease would not be ignored at all, when a patient complains at signs of neck mass. Further, the possibility of metastasis cancer should be considered once thyroid nodules occur in patients with colorectal cancer. Even though the biological characteristics and stage of the primary tumor have an important impact on the prognosis, positive standardized treatments can also be helpful.

Hemangiopericytomas (HPCs) are rare vascular tumors, and head and neck hemangiopericytoma (HNHPC) accounts for 11% to 16% of all HPCs, possibly occurring at any age. However, according to a recent study, HNHPC was most frequently observed in middle-aged adults and had a slight predominance of female patients. In the present case, we report the successful treatment of HNHPC.

Carotid body tumors are slow growing neck masses that arise from the neural crest cells at the carotid bifurcation. Majority are asymptomatic and are diagnosed incidentally. Surgical excision is accepted as the treatment of choice to reduce complications. In the present series, we report 10 cases of carotid body tumors and our institutional experience. All patients underwent radiological evaluation with an ultrasonography with Doppler, contrast enhanced computed tomography and MR angiography. 6 cases were operated by a transcervical excision. The tumor was excised in tototranscervically. One of the cases required saphenous vein graft intraoperatively due to vascular injury and also had postoperative vocal cord palsy. The rest had an uneventful recovery. Carotid body tumors although rare and seemingly indolent can cause substantial symptoms if left untreated. A prompt multi modality approach is needed for both diagnosis and treatment to avoid major complications.

UNASSIGNED: Vagal paragangliomas of neck are rare tumours of neural crest origin usually arising in elderly age with female predominance. They have a vague clinical presentation therefore difficult to diagnose preoperatively. We hope that this case report and literature review would add to the existing literature and help devise a comprehensive diagnostic and therapeutic plan for vagal paragangliomas.
METHODS: We report a case of vagal paraganglioma occurring in a 13-year-old male which is an extremely rare presentation in this age group. The patient presented with a large solitary painless progressively growing mass in posterior triangle of neck. External jugular vein was stretched and trachea was deviated medially. The mass was arising via a twig from vagus nerve and was surgically excised. Diagnosis was established post-operatively through histopathological analysis.
UNASSIGNED: Vagal paraganglioma is a rare occurrence in male teenagers and may mimic schwannoma, neuroma, jugular meningioma, or other gangliomas. Surgical excision is mainstay of treatment but resultant vagal complications and neurological consequences are usually unavoidable. Nonetheless, the prognosis may be easily improved with sound surgical judgement, skill, and routine follow-up.
CONCLUSIONS: Vagal paraganglioma usually presents as a swelling in neck and cannot be diagnosed on simple clinical examination. CT scan and MRI are imaging modalities of choice and can be coupled with angiography to increase diagnostic accuracy. Although both radiation therapy and surgical excision have both been found to be successful treatment options, it is still unclear which is more beneficial.

UNASSIGNED: Paraganglioma (PG); also known as Glomus Tumor, is a rare neoplastic entity that originates from neural crest cells. It can manifest in different patterns, chiefly benign but others are locally invasive and malignant in behavior. Due to the prevalence of other more common types of neck masses and Paraganglioma\'s exceeding rarity, misdiagnoses can easily take place, and this results in higher patient morbidity and mortality rates. Preoperative diagnosis constitutes a major clinical challenge, especially in patients with a previous surgical history in the neck region like our patient.
METHODS: We are hereby presenting the case of a 56-year-old female with a known history of total thyroidectomy, who presented to our department with a progressively growing painful recurring neck mass two years following her total thyroidectomy. The preoperative diagnostic assessment revealed two unilateral synchronous masses encapsulating the Right Common Carotid Artery and occupying the common carotid bifurcation.
UNASSIGNED: Complete surgical resection of the lesions after isolation from the surrounding anatomical structures was done. Subsequent histopathological and immunohistochemical analyses of the specimens established the diagnosis of a Carotid Body Tumor (CBT).
CONCLUSIONS: CBTs are rare vascular neoplasia, and they possess the potential for malignant transformation. This neoplasia warrants investigation and documentation to establish innovative diagnostic parameters and accomplish timely surgical interventions. To the best of our knowledge, this is the first documented case of a unilateral synchronous malignant Carotid Body Tumor from Syria. Surgery remains the treatment of choice, while radio-/chemotherapy is reserved for non-surgical cases only.

Venous aneurysms of the head and neck, and in particular the facial vein, are rare lesions that present as soft, compressible masses. We describe a case of an idiopathic aneurysm of the facial vein. A comprehensive literature review of this entity was conducted to better understand the disease process. A 51-year-old female presented with a one-year history of a prominent but painless right submandibular mass that was more noticeable with maneuvers such as straining. An exam showed a painless, soft, compressible, right level 1b neck mass that enlarged with Valsalva. A computed tomography scan of the neck revealed a 2.7 cm enhancing mass adjacent to the right submandibular gland. Further workup included a direct puncture venography, which demonstrated an unruptured 3 cm venous aneurysm involving the right facial vein. Surgical excision was offered to the patient, which was completed without complications. Histopathology of the mass was consistent with a facial vein aneurysm and confirmed the suspected diagnosis. The patient was seen postoperatively in follow-up and was healing well. While facial vein aneurysms are rare, it is important to recognize, work up, and treat them appropriately. A painless compressible mass that enlarges with Valsalva is suggestive of the diagnosis. Management may vary on a case-by-case basis with surgical resection being the definitive treatment of choice.

BACKGROUND: Thyroid goiter is a benign chronic enlargement of the thyroid gland, which presents as a painless anterior neck mass with occasional extension to the mediastinum. Retropharyngeal goiter is a rare presentation and hardly reported in the literature.
METHODS: A 70-year-old male presented with a multinodular goiter with a large retropharyngeal component.
UNASSIGNED: Physical examination of the head and neck revealed a massive anterior neck mass. Laryngeal endoscopy with a 70-degree rigid endoscope demonstrated a large retropharyngeal mass completely obstructing the view of the larynx. Computed tomography (CT) scan revealed a large multinodular goiter with suprahyoid and retrosternal extension, resulting in displacement of the trachea.
RESULTS: The mass was excised completely under general anesthesia and intubation was done under fiberoptic bronchoscopy guidance. The mass was sent for histological analysis, which confirmed the diagnosis of Hashimoto thyroiditis.
CONCLUSIONS: Eventually, upon follow-up at three months post excision, no evidence of recurrence was detected.

Although meningiomas are the most common central nervous system neoplasms, extracranial metastases are exceedingly rare. There are even fewer reports of metastatic meningiomas to the neck.
We described a patient with multiply recurrent orbital meningioma with metastasis to the neck found incidentally during neck exploration for composite resection and free tissue reconstruction. We performed a systematic review for all records pertaining to metastatic meningiomas to the cervical regions.
We found 9 previous reports of cervical metastatic meningiomas. Almost all cases underwent extensive local resection. There was no evidence of an association between the histological grade of the tumor and risk of metastasis to the neck. Cervical lymph node dissemination is more common in patients presenting after previous primary tumor resection.
In the context of a neck mass, our findings suggest that metastatic meningioma should be included in the differential diagnosis, especially in patients with previous resections.

OBJECTIVE: Several clinical practice guidelines have been produced and disseminated for the evaluation of a neck mass. However, to date, the quality and methodologic rigor of these clinical practice guidelines have not been appraised. Therefore, this study set out to identify and assess the methodologic quality of national and international guidelines for the evaluation and management of neck masses in adults.
METHODS: We conducted a comprehensive search of EMBASE, MEDLINE/PubMed, SCOPUS and grey literature sources until September 2020. The quality of these guidelines was assessed by four reviewers using the Appraisal of Guidelines for Research and Evaluation, 2nd edition (AGREE II). Domain scores were considered acceptable quality if they scored >60%, and Intraclass Correlation Coefficients (ICC) were calculated to assess agreement among the appraisers.
RESULTS: Seven guidelines were assessed for evaluation. Among these, only the American Academy of Otolaryngology (AAO), Cancer Care Manitoba (CCMB), and the American Society of Clinical Oncology (ASCO) achieved an overall rating of \"high\". The remaining four guidelines achieved ratings of either \"average\" or \"low\". The \"Scope and Purpose\" domain achieved the highest mean score (94.4%±5.0%), and lowest was \"Applicability\" (51.5%±29.2%). ICC analysis showed substantial to very good agreement across all domains (0.75-0.98).
CONCLUSIONS: These findings highlight the variability in methodologic quality of guidelines for the evaluation and management of adult neck mass. The results from this analysis highlight the need to improve guidelines development process for this topic and may guide the selection and use of these guidelines in clinical practice.

UNASSIGNED: Primary hyperparathyroidism (PHPT) is a rare condition in the pediatric population. Parathyroid carcinoma (PC) is a very uncommon cause of PHPT, accounting for < 1% of pediatric PHPT cases. It is challenging to distinguish between parathyroid adenoma (PA), the most common cause of PHPT, and PC. In this report, we described a young female who presented with a history of progressive limping and was finally diagnosed with PC.
UNASSIGNED: A 15-year-old girl presented with progressive limping and bone pain for 8 years. She was referred by an orthopedic surgeon because of elevated intact parathyroid hormone (iPTH) for further evaluation. Physical examination revealed a large, firm, and non-tender neck mass, left hip tenderness, and limited range of motion. The initial biochemistry tests showed a borderline high calcium level of 10.8 mg/dl, an elevated iPTH level of 2876 pg/mL, and a decreased phosphorus level of 2.4 mg/dL. The 99mTechnetium (Tc) sestamibi scan displayed early intense activity in the right thyroid lobe persisting in the three-hour repeat scan, compatible with a parathyroid lesion. The patient underwent right-sided neck exploration and parathyroidectomy. Intraoperative and pathology findings confirmed the diagnosis of PC. Immunohistochemistry (IHC) staining revealed creatine kinase (CK) and CD31 in endothelial cells of the tumor. Ki67 staining was also positive in 2% - 3% of tumor cells. The whole exome sequencing (WES) study was negative for cell division cycle 73 (CDC73) and multiple endocrine neoplasia 1 (MEN1) genes.
UNASSIGNED: PC should be considered as a differential diagnosis of PHPT in the pediatric population, even in the presence of mild hypercalcemia.