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Weerasekara P, Chandrarathne N, Jayaweera G, Rathnayake W, Perera S. Basaloid squamous cell carcinoma clinically and radiologically masquerading as a head and neck paraganglioma: a case report and review of the literature. J Med Case Rep 2024; 18:275. [PMID: 38858796 PMCID: PMC11165813 DOI: 10.1186/s13256-024-04601-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Accepted: 05/22/2024] [Indexed: 06/12/2024] Open
Abstract
BACKGROUND This paper reports the first case of basaloid squamous cell carcinoma clinically and radiologically masquerading as a head and neck paraganglioma. CASE PRESENTATION A 66-year-old Sinhalese male with unilateral hearing impairment and 7th-12th (excluding 11th) cranial nerve palsies was diagnosed radiologically with a head and neck paraganglioma by magnetic resonance imaging of the brain, which revealed a hypointense and hyperintense punctate mass centered at the jugular fossa with intracranial extension. The ascending pharyngeal artery, recognized as the major feeder, was embolized by percutaneous embolization following digital subtraction angiography. Gross total resection of the tumor was followed by an uneventful postoperative recovery. Combined immunohistochemistry and histopathological morphology revealed a basaloid squamous cell carcinoma, following which the patient completed radiotherapy and is at 3-month follow-up currently. CONCLUSION This case report discusses the diagnostic pitfalls and management challenges of this rare entity on the basis of prior evidence, as well as a literature review and clinical and surgical analysis.
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Affiliation(s)
| | - Nadeeka Chandrarathne
- Department of Community Medicine, Faculty of Medicine, University of Colombo, Colombo, 00800, Sri Lanka
| | - Geethika Jayaweera
- Department of Pathology, Asiri Central Hospital, Colombo, 01000, Sri Lanka
| | | | - Sunil Perera
- Asiri Central Brain and Spine Neurosurgical Group, Asiri Central Hospital, Colombo, 01000, Sri Lanka
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Raymond MJ, Ottinger A, Rowley MA, Bobian M, Dornhoffer J, Brennan E, Rizk HG. A Scoping Review of Otologic Manifestations of Hematologic Malignancies. Otol Neurotol 2024; 45:362-375. [PMID: 38437804 DOI: 10.1097/mao.0000000000004141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2024]
Abstract
OBJECTIVE To examine the otologic and neurotologic symptoms, physical examination findings, and imaging features secondary to hematologic malignancies. METHODS Following Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, databases, including PubMed, Scopus, and CINAHL, were searched for articles including patients with otologic manifestations of leukemia, lymphoma and multiple myeloma. Data collected included patient and study demographics, specific hematologic malignancy, timing and classification of otologic symptoms, physical examination findings, imaging features and methods of diagnosis. Pooled descriptive analysis was performed. RESULTS Two hundred seventy-two articles, of which 255 (93.8%) were case reports and 17 (6.2%) were case series, reporting on 553 patients were identified. Otologic manifestations were reported on 307 patients with leukemia, 204 patients with lymphoma and 42 patients with multiple myeloma. Hearing loss and unilateral facial palsy were the most common presenting symptoms for 111 reported subjects with leukemia (n = 46, 41.4%; n = 43, 38.7%) and 90 with lymphoma (n = 38, 42.2%; n = 39, 43.3%). Hearing loss and otalgia were the most common presenting symptoms for 21 subjects with multiple myeloma (n = 10, 47.6%; n = 6, 28.6%). Hearing loss and unilateral facial palsy were the most common otologic symptoms indicative of relapse in subjects with leukemia (n = 14, 43.8%) and lymphoma (n = 5, 50%). CONCLUSION Hearing loss, facial palsy, and otalgia might be the first indication of a new diagnosis or relapse of leukemia, lymphoma, or multiple myeloma. Clinicians should have a heightened level of suspicion of malignant etiologies of otologic symptoms in patients with current or medical histories of these malignancies.
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Affiliation(s)
| | - Allie Ottinger
- Department of Otolaryngology-Head & Neck Surgery, Medical University of South Carolina, Charleston, SC
| | - M Andrew Rowley
- Department of Otolaryngology-Head & Neck Surgery, Medical University of South Carolina, Charleston, SC
| | - Michael Bobian
- Department of Otolaryngology-Head & Neck Surgery, Medical University of South Carolina, Charleston, SC
| | - Jim Dornhoffer
- Department of Otolaryngology-Head & Neck Surgery, Medical University of South Carolina, Charleston, SC
| | | | - Habib G Rizk
- Department of Otolaryngology-Head & Neck Surgery, Medical University of South Carolina, Charleston, SC
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Chu C, Tan SH, Yuen HW, Low D. A clinical conundrum: Temporal bone metastases from lung adenocarcinoma. Am J Otolaryngol 2023; 44:103880. [PMID: 37003029 DOI: 10.1016/j.amjoto.2023.103880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 03/25/2023] [Indexed: 03/30/2023]
Abstract
BACKGROUND Metastatic disease to the temporal bone is rare. Even more uncommonly, it can be the first manifestation of an underlying malignancy. Patients typically present late in the disease process with non-specific symptoms of hearing loss, facial nerve palsy and otorrhea. CASE A 62-year-old Chinese female presented with right facial weakness, which had near-complete improvement in response to pulse prednisolone. On examination, she had a right temporal swelling and right mild-severe conductive hearing loss. A computed tomography scan showed a destructive lesion centred in the squamous temporal bone, with an associated soft tissue component. Positron emission tomography scan revealed bony and lung metastases, but no distinct hypermetabolic primary site. An incisional biopsy unexpectedly returned as metastatic lung adenocarcinoma. CONCLUSION Although rare, it is important for otolaryngologists to be aware of the insidious nature of temporal bone metastases and possible atypical clinical and radiological features, to facilitate timely workup and initiation of treatment.
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Affiliation(s)
- Clarisse Chu
- Department of Otorhinolaryngology - Head and Neck Surgery, Changi General Hospital, Singapore
| | - Sze Hwa Tan
- Department of Laboratory Medicine, Changi General Hospital, Singapore
| | - Heng Wai Yuen
- Department of Otorhinolaryngology - Head and Neck Surgery, Changi General Hospital, Singapore
| | - David Low
- Department of Otorhinolaryngology - Head and Neck Surgery, Changi General Hospital, Singapore.
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Malak W, Hagiwara M, Nguyen V. Neuroimaging of Dizziness and Vertigo. Otolaryngol Clin North Am 2021; 54:893-911. [PMID: 34312007 DOI: 10.1016/j.otc.2021.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Dizziness and vertigo are common symptoms in the primary care and emergency settings, resulting in a significant decrease in quality of life and a high cost burden to the US health care system. The etiology of these symptoms is difficult to elucidate owing to a wide range of diseases with overlapping manifestations. The broad differential diagnosis based on whether the disease process is central or peripheral is showcased. Each differential will be categorized into neoplastic, infectious or inflammatory, structural, traumatic, and iatrogenic causes. Computed tomography scans, MRI, and vascular imaging are frequently complimentary in providing diagnoses and guidance in management.
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Affiliation(s)
- Wassim Malak
- Department of Radiology, NYU Langone Health, 222 East 41st Street, 5th Floor Radiology, New York, NY 10017, USA
| | - Mari Hagiwara
- Department of Radiology, NYU Langone Health, 222 East 41st Street, 5th Floor Radiology, New York, NY 10017, USA
| | - Vinh Nguyen
- Department of Radiology, NYU Langone Health, 222 East 41st Street, 5th Floor Radiology, New York, NY 10017, USA.
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Kumar R, Rice S, Lingam RK. Detecting causes of pulsatile tinnitus on CT arteriography-venography: A pictorial review. Eur J Radiol 2021; 139:109722. [PMID: 33894642 DOI: 10.1016/j.ejrad.2021.109722] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 04/07/2021] [Accepted: 04/12/2021] [Indexed: 12/19/2022]
Abstract
Pulsatile tinnitus (PT) can be a mild or debilitating symptom. Following clinical examination and otoscopy, when the underlying aetiology is not apparent, radiological imaging can be used to evaluate further. CT arteriography-venography (CT A-V) of the head and neck has recently been introduced as a single 'one catch' modality for identifying the many causes of PT including those which are treatable and potentially serious whilst also providing reassurance through negative studies or studies with benign findings. CT A-V is performed as a single phase study allowing both arterial and venous assessment, hence limiting radiation exposure. Additional multiplanar reformats and bone reconstructions are desirable. Understanding the limitations of CT A-V is also required, with an awareness of the scenarios where other imaging modalities should be considered. The causes of PT can be divided into systemic and non-systemic categories. Non-systemic aetiologies in the head and neck should be carefully reviewed on CT A-V and include a variety of vascular causes (arteriovenous malformations/fistulas, venous or arterial aetiologies) and non-vascular causes (tumours and bony dysplasias). Venous causes (dominant, aberrant, stenosed or thrombosed venous vessels) are more common than arterial aetiologies (aberrant or stenosed internal carotid artery, aneurysms or a persistent stapedial artery). Glomus tumours that are not visible on otoscopy and osseous pathologies such as bony dehiscence and otospongiosis should also be excluded. Careful assessment of all the potential vascular and non-vascular causes should be reviewed in a systematic approach, with correlation made with the clinical history. A structured reporting template for the reporting radiologist is provided in this review to ensure all the potential causes of PT are considered on a CT A-V study. This will help in providing a comprehensive radiological evaluation, hence justifying the radiation dose and for patient assessment and prognostication.
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Affiliation(s)
- Raekha Kumar
- Northwick Park, London North West University Healthcare NHS Trust, Watford Road, Harrow, HA13UJ, United Kingdom; Watford General Hospital, West Hertfordshire Hospitals NHS Trust, Vicarage Road, Watford, Hertfordshire, WD180HB, United Kingdom.
| | - Scott Rice
- Northwick Park, London North West University Healthcare NHS Trust, Watford Road, Harrow, HA13UJ, United Kingdom.
| | - Ravi Kumar Lingam
- Northwick Park, London North West University Healthcare NHS Trust, Watford Road, Harrow, HA13UJ, United Kingdom.
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6
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Jones AJ, Tucker BJ, Novinger LJ, Galer CE, Nelson RF. Metastatic Disease of the Temporal Bone: A Contemporary Review. Laryngoscope 2020; 131:1101-1109. [PMID: 32940937 DOI: 10.1002/lary.29096] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 08/20/2020] [Accepted: 08/22/2020] [Indexed: 12/30/2022]
Abstract
OBJECTIVES To identify the frequency and primary site of metastatic pathologies to the temporal bone and characterize the associated symptomatology. METHODS The MEDLINE, Embase, and Web of Science databases were systematically reviewed according to the PRISMA guidelines to identify all cases of pathologically confirmed distant temporal bone metastases published with English translation until October 2019. Descriptive statistics were performed. RESULTS Out of 576 full-length articles included for review, 109 met final criteria for data extraction providing 255 individual cases of distant temporal bone metastases. There was a male predominance (54.9%) with median age of 59.0 years (range 2-90). The most common locations of primary malignancy included the breasts (19.6%), lungs (16.1%), and prostate (8.6%). Most tumors were carcinomas of epithelial origin (75.3%) and predominantly adenocarcinoma (49.4%). The commonest metastatic sites encountered within the temporal bone were the petrous (72.0%) and mastoid (49.0%) portions. Bilateral temporal bone metastases occurred in 39.8% of patients. Patients were asymptomatic in 32.0% of cases. Symptomatic patients primarily reported hearing loss (44.3%), facial palsy (31.2%), and otalgia (16.6%) for a median duration of 1 month. Petrous lesions were associated with asymptomatic cases (P = .001) while mastoid lesions more often exhibited facial palsy (P = .026), otalgia (P < .001), and otorrhea (P < .001). Non-carcinomatous tumors were associated with petrosal metastasis (P = .025) and asymptomatic cases (P = .109). Carcinomatous metastases more often presented with otalgia (P = .003). CONCLUSIONS Temporal bone metastasis is uncommon but should be considered in patients with subacute otologic symptoms or facial palsy and history of distant malignancy. Laryngoscope, 131:1101-1109, 2021.
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Affiliation(s)
- Alexander J Jones
- Indiana University School of Medicine, Indianapolis, Indiana, U.S.A.,Department of Otolaryngology-Head & Neck Surgery, Indiana University School of Medicine, Indianapolis, Indiana, U.S.A
| | - Brady J Tucker
- Indiana University School of Medicine, Indianapolis, Indiana, U.S.A
| | - Leah J Novinger
- Indiana University School of Medicine, Indianapolis, Indiana, U.S.A.,Department of Otolaryngology-Head & Neck Surgery, Indiana University School of Medicine, Indianapolis, Indiana, U.S.A
| | - Chad E Galer
- Indiana University School of Medicine, Indianapolis, Indiana, U.S.A.,Department of Otolaryngology-Head & Neck Surgery, Indiana University School of Medicine, Indianapolis, Indiana, U.S.A
| | - Rick F Nelson
- Indiana University School of Medicine, Indianapolis, Indiana, U.S.A.,Department of Otolaryngology-Head & Neck Surgery, Indiana University School of Medicine, Indianapolis, Indiana, U.S.A.,Department of Neurosurgery, Indiana University School of Medicine, Indianapolis, Indiana, U.S.A
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Pisani P, Airoldi M, Allais A, Aluffi Valletti P, Battista M, Benazzo M, Briatore R, Cacciola S, Cocuzza S, Colombo A, Conti B, Costanzo A, della Vecchia L, Denaro N, Fantozzi C, Galizia D, Garzaro M, Genta I, Iasi GA, Krengli M, Landolfo V, Lanza GV, Magnano M, Mancuso M, Maroldi R, Masini L, Merlano MC, Piemonte M, Pisani S, Prina-Mello A, Prioglio L, Rugiu MG, Scasso F, Serra A, Valente G, Zannetti M, Zigliani A. Metastatic disease in head & neck oncology. ACTA OTORHINOLARYNGOLOGICA ITALICA : ORGANO UFFICIALE DELLA SOCIETA ITALIANA DI OTORINOLARINGOLOGIA E CHIRURGIA CERVICO-FACCIALE 2020; 40:S1-S86. [PMID: 32469009 PMCID: PMC7263073 DOI: 10.14639/0392-100x-suppl.1-40-2020] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The head and neck district represents one of the most frequent sites of cancer, and the percentage of metastases is very high in both loco-regional and distant areas. Prognosis refers to several factors: a) stage of disease; b) loco-regional relapses; c) distant metastasis. At diagnosis, distant metastases of head and neck cancers are present in about 10% of cases with an additional 20-30% developing metastases during the course of their disease. Diagnosis of distant metastases is associated with unfavorable prognosis, with a median survival of about 10 months. The aim of the present review is to provide an update on distant metastasis in head and neck oncology. Recent achievements in molecular profiling, interaction between neoplastic tissue and the tumor microenvironment, oligometastatic disease concepts, and the role of immunotherapy have all deeply changed the therapeutic approach and disease control. Firstly, we approach topics such as natural history, epidemiology of distant metastases and relevant pathological and radiological aspects. Focus is then placed on the most relevant clinical aspects; particular attention is reserved to tumours with distant metastasis and positive for EBV and HPV, and the oligometastatic concept. A substantial part of the review is dedicated to different therapeutic approaches. We highlight the role of immunotherapy and the potential effects of innovative technologies. Lastly, we present ethical and clinical perspectives related to frailty in oncological patients and emerging difficulties in sustainable socio-economical governance.
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Affiliation(s)
- Paolo Pisani
- ENT Unit, ASL AT, “Cardinal Massaja” Hospital, Asti, Italy
| | - Mario Airoldi
- Medical Oncology, Città della Salute e della Scienza, Torino, Italy
| | | | - Paolo Aluffi Valletti
- SCDU Otorinolaringoiatria, AOU Maggiore della Carità di Novara, Università del Piemonte Orientale, Italy
| | | | - Marco Benazzo
- SC Otorinolaringoiatria, Fondazione IRCCS Policlinico “S. Matteo”, Università di Pavia, Italy
| | | | | | - Salvatore Cocuzza
- Department of Medical, Surgical and Advanced Technologies “G.F. Ingrassia”, University of Catania, Italy
| | - Andrea Colombo
- ENT Unit, ASL AT, “Cardinal Massaja” Hospital, Asti, Italy
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Italy
- Polymerix S.r.L., Pavia, Italy
| | | | - Laura della Vecchia
- Unit of Otorhinolaryngology General Hospital “Macchi”, ASST dei Settelaghi, Varese, Italy
| | - Nerina Denaro
- Oncology Department A.O.S. Croce & Carle, Cuneo, Italy
| | | | - Danilo Galizia
- Medical Oncology, Candiolo Cancer Institute, FPO-IRCCS, Candiolo,Italy
| | - Massimiliano Garzaro
- SCDU Otorinolaringoiatria, AOU Maggiore della Carità di Novara, Università del Piemonte Orientale, Italy
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, Italy
- Polymerix S.r.L., Pavia, Italy
| | | | - Marco Krengli
- Dipartimento Medico Specialistico ed Oncologico, SC Radioterapia Oncologica, AOU Maggiore della Carità, Novara, Italy
- Dipartimento di Medicina Traslazionale, Università del Piemonte Orientale, Novara, Italy
| | | | - Giovanni Vittorio Lanza
- S.O.C. Chirurgia Toracica, Azienda Ospedaliera Nazionale “SS. Antonio e Biagio e Cesare Arrigo”, Alessandria, Italy
| | | | - Maurizio Mancuso
- S.O.C. Chirurgia Toracica, Azienda Ospedaliera Nazionale “SS. Antonio e Biagio e Cesare Arrigo”, Alessandria, Italy
| | - Roberto Maroldi
- Department of Radiology, University of Brescia, ASST Spedali Civili Brescia, Italy
| | - Laura Masini
- Dipartimento Medico Specialistico ed Oncologico, SC Radioterapia Oncologica, AOU Maggiore della Carità, Novara, Italy
| | - Marco Carlo Merlano
- Oncology Department A.O.S. Croce & Carle, Cuneo, Italy
- Medical Oncology, Candiolo Cancer Institute, FPO-IRCCS, Candiolo,Italy
| | - Marco Piemonte
- ENT Unit, University Hospital “Santa Maria della Misericordia”, Udine, Italy
| | - Silvia Pisani
- Immunology and Transplantation Laboratory Fondazione IRCCS Policlinico “S. Matteo”, Pavia, Italy
| | - Adriele Prina-Mello
- LBCAM, Department of Clinical Medicine, Trinity Translational Medicine Institute, Trinity College Dublin, Dublin 8, Ireland
- Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, Dublin 2, Ireland
| | - Luca Prioglio
- Department of Otorhinolaryngology, ASL 3 “Genovese”, “Padre Antero Micone” Hospital, Genoa, Italy
| | | | - Felice Scasso
- Department of Otorhinolaryngology, ASL 3 “Genovese”, “Padre Antero Micone” Hospital, Genoa, Italy
| | - Agostino Serra
- University of Catania, Italy
- G.B. Morgagni Foundation, Catania, Italy
| | - Guido Valente
- Dipartimento di Medicina Traslazionale, Università del Piemonte Orientale, Novara, Italy
| | - Micol Zannetti
- Dipartimento di Medicina Traslazionale, Università del Piemonte Orientale, Novara, Italy
| | - Angelo Zigliani
- Department of Radiology, University of Brescia, ASST Spedali Civili Brescia, Italy
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Lindquist NR, Wilde DC, Appelbaum EN, Duckworth EA, Sweeney AD. Colon cancer metastasis to the lateral skull base masquerading as mastoiditis. OTOLARYNGOLOGY CASE REPORTS 2019. [DOI: 10.1016/j.xocr.2019.100126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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9
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Hiyama T, Sekiya K, Kuno H, Oda S, Kusumoto M, Minami M, Kobayashi T. Imaging of extracranial head and neck lesions in cancer patients: a symptom-based approach. Jpn J Radiol 2019; 37:354-370. [PMID: 30911985 DOI: 10.1007/s11604-019-00832-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 03/17/2019] [Indexed: 02/06/2023]
Abstract
Besides intracranial lesions, neurological symptoms are also caused in cancer patients by extracranial lesions in the head and neck. Common symptoms caused by such lesions include visual loss, visual field defect, diplopia, ptosis, sensory abnormalities of the head and neck region, facial nerve palsy, dysphagia, dysarthria, hoarseness, and syncope. Some cancer patients often have multiple cranial nerve involvement, which is associated with several syndromes such as jugular foramen syndrome. The main causes of cranial nerve dysfunction due to extracranial lesions include bone and nodal metastasis, perineural tumor spread, inflammation, and radiation injury. The location of the lesions causing the neurological symptom may be estimated by the symptoms and physical examination. However, CT/MRI is critical for reaching the final diagnosis and for treatment planning and management of the cancer patients. Moreover, early identification of the extracranial lesions may significantly affect patient care and alter outcomes. Thus, radiologists should be familiar with imaging findings of the common neurological disorders and the complex anatomy of the head and neck region, which should be checked in cancer patients with neurological symptoms.
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Affiliation(s)
- Takashi Hiyama
- Department of Diagnostic Radiology, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan.
| | - Kotaro Sekiya
- Department of Diagnostic Radiology, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Hirofumi Kuno
- Department of Diagnostic Radiology, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Shioto Oda
- Department of Diagnostic Radiology, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Masahiko Kusumoto
- Department of Diagnostic Radiology, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan.,Department of Diagnostic Radiology, National Cancer Center Hospital, 5-1-1, Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Manabu Minami
- Department of Diagnostic and Interventional Radiology, Faculty of Medicine, University of Tsukuba, 2-1-1 Amakubo, Tsukuba, Ibaraki, 305-8576, Japan
| | - Tatsushi Kobayashi
- Department of Diagnostic Radiology, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
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