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Abstract Background Primary thyroid leiomysosarcoma is a rare and aggressive disease which represents 0.014% of primary thyroid cancers. It confers a diagnostic conundrum, due to difficulty to make a preoperative diagnosis of thyroid leiomyosarcoma and to differentiate it from anaplastic thyroid carcinoma. Case presentation We herein report a rare case of primary thyroid leiomyosarcoma. A 48-year-old male presented with history of anterior neck swelling for the past 2 months. Computed tomography (CT) neck showed hypodense nodule at the right thyroid lobe with calcification causing tracheal deviation, with intratracheal extension at 1st and 2nd tracheal rings and presence of lung metastases. The histopathology analysis yield high grade spindle cell neoplasm suggestive of sarcoma. Immunohistochemistry showed that neoplastic spindle cells were positive for smooth muscle actin, vimentin, caldesmon while no reactivity was reported for thyroglobulin, calcitonin, thyroid transcription factor-1, S-100, CD45, CD 5, and cytokeratins. Patient had undergone tracheostomy and chemotherapy but he succumbed to death 1 month after completion of chemotherapy. Conclusion Primary thyroid leiomyoarcoma is a very rare and aggressive disease. The treatment ranging from surgery, adjuvant radiotherapy and chemotherapy, with high recurrence rates.

A 12-year-old boy was referred to our ENT clinic with an incidentally discovered left supraclavicular mass that was suspected to be malignant. He was asymptomatic and had no prior illnesses. Neck examination found a fixed, hard, non-pulsatile, and non-tender mass measuring 2 cm in diameter in the left supraclavicular fossa. Rest of the ENT assessment, chest and upper limb neurovascular examinations were unremarkable. The patient’s full blood count was within the normal range. A plain chest radiograph was taken as part of the work-up.

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Ectopic salivary gland tissue (ESGT) is salivary tissue located outside the major, minor and accessory salivary glands. Neoplasms rarely arise from ESGT, let alone carcinoma ex-pleomorphic adenoma (CEPA) which is a malignant tumour that arises from the epithelial component of pleomorphic adenoma. It usually occurs in the parotid gland and in lesser instances, from submandibular gland or minor salivary glands. Herein, we report a rare case of CEPA in right supraclavicular ESGT of a 67-year-old lady.She underwent complete surgical excision of the mass and is free from any recurrence to date. Brief review of pathogenesis, clinical features and treatment of ectopic CEPA are discussed. A thorough review of the English literature reveals that our patient may be the second case of ectopic CEPA in the neck region ever reported to date. [ABSTRACT FROM AUTHOR]