Journal
INTERNATIONAL JOURNAL OF SURGERY CASE REPORTS
Volume 67, Issue -, Pages 106-109Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijscr.2019.12.019
Keywords
Carcinoma of unknown primary; Thoracic surgery; Case report
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INTRODUCTION: Carcinoma of unknown primary is a well-recognized clinical syndrome which accounts for the 3-5% of all the malignancies. Patients with carcinoma of unknown primary usually present with late stage disease without having identified the primary source of the tumour despite an extensive diagnostic work-up. PRESENTATION OF CASE: A 60 years old male presented to the clinic complaining of a neck mass to the left lateral neck. Patient's history was unremarkable without evidence of any malignant disease. Clinical and radiological examination revealed a cystic mass extending from the lower one third of the neck to the left clavicle causing periostal reaction. Mass biopsy and PET-CT was unspecific for the primary origin of the mass. However in the context of tumour immunohistochemistry, HPV status, neck location and basaloid cell differentiation, the tumour mass was considered as carcinoma of unknown primary with possible oropharyngeal primary location. The patient underwent surgical resection of the mass, left clavicle and the first rib. One year after the operation the patient is disease free. DISCUSSION: Although CUP usually presents with cervical lyphadenopathy, in our case there was no evidence of lymph node tissue infiltration in the neck region. Surgical resection of the mass showed that the location was extending within the cervical soft tissues and upper thorax. Taking into consideration the absence of lymphadenopathy this is an uncommon location of carcinoma of unknown primary in the neck. CONCLUSION: This is an uncommon location of CUP with possible implications in survival and management. (C) 2019 Published by Elsevier Ltd on behalf of IJS Publishing Group Ltd.
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