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Malignant external otitis following radiotherapy for oral cancer: A case report.

Abstract Although an ototoxicity is well-known as adverse event of the radiotherapy, it is not widely known that immunosuppressed patients who underwent radiotherapy in head and neck region have risk of malignant external otitis.
PMID
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Authors

Mayor MeshTerms
Keywords
Journal Title medicine
Publication Year Start




PMID- 29794799
OWN - NLM
STAT- MEDLINE
DCOM- 20180604
LR  - 20180604
IS  - 1536-5964 (Electronic)
IS  - 0025-7974 (Linking)
VI  - 97
IP  - 21
DP  - 2018 May
TI  - Malignant external otitis following radiotherapy for oral cancer: A case report.
PG  - e10898
LID - 10.1097/MD.0000000000010898 [doi]
AB  - RATIONALE: Although an ototoxicity is well-known as adverse event of the
      radiotherapy, it is not widely known that immunosuppressed patients who underwent
      radiotherapy in head and neck region have risk of malignant external otitis.
      PATIENT CONCERNS: A 68-year-old man with diabetes, who had been diagnosed as
      intraosseous squamous cell carcinoma of the right mandible, underwent surgical
      resection. He received a total of 60 Gy/30Fr postoperative radiation. Four months
      after the course of radiation, he suffered from right aural fullness, otalgia and
      otorrhea. DIAGNOSES: Clinical examination revealed granulation and existence of
      Pseudomonas aeruginosa in the external auditory canal. Computed tomography showed
      expansive inflammation and erosion in the temporal bone. The patient is elderly
      and diabetes. These findings led to the diagnosis of malignant external otitis.
      INTERVENTIONS: The ear irrigation and administration of quinolones were started. 
      Afterwards, fistula was formed in the oral cavity, and connected to the right
      external auditory canal. Therefore, irrigations were performed not only from ear 
      but also from the oral fistula. OUTCOMES: Eight weeks after starting treatment,
      the malignant external otitis was completely healed. LESSONS: Physicians should
      raise awareness of malignant external otitis in immunosuppressed patients with
      oral cancer after radiotherapy.
FAU - Eguchi, Takanori
AU  - Eguchi T
AD  - Department of Oral and Maxillofacial Surgery.
FAU - Basugi, Akihiko
AU  - Basugi A
AD  - Department of Oral and Maxillofacial Surgery.
FAU - Kanai, Ikuyo
AU  - Kanai I
AD  - Department of Oral and Maxillofacial Surgery.
FAU - Miyata, Yukinaga
AU  - Miyata Y
AD  - Department of Oral and Maxillofacial Surgery.
FAU - Nasuno, Tomomitsu
AU  - Nasuno T
AD  - Department of Otorhinolaryngology, Toshiba Rinkan Hospital, Sagamihara.
FAU - Hamada, Yoshiki
AU  - Hamada Y
AD  - Department of Oral and Maxillofacial Surgery, School of Dental Medicine, Tsurumi 
      University, Yokohama, Japan.
LA  - eng
PT  - Case Reports
PT  - Journal Article
PL  - United States
TA  - Medicine (Baltimore)
JT  - Medicine
JID - 2985248R
RN  - 0 (Anti-Bacterial Agents)
RN  - 0 (Fluoroquinolones)
RN  - 5E8K9I0O4U (Ciprofloxacin)
RN  - V72H9867WB (garenoxacin)
SB  - AIM
SB  - IM
MH  - Administration, Intravenous
MH  - Aged
MH  - Anti-Bacterial Agents/therapeutic use
MH  - Asian Continental Ancestry Group
MH  - Carcinoma, Squamous Cell/pathology/radiotherapy/surgery
MH  - Ciprofloxacin/administration & dosage/therapeutic use
MH  - Ear Canal/pathology/*radiation effects
MH  - Fluoroquinolones/administration & dosage/therapeutic use
MH  - Humans
MH  - Immunocompromised Host
MH  - Male
MH  - Mandibular Neoplasms/pathology/radiotherapy/surgery
MH  - Mouth Neoplasms/*pathology/*radiotherapy
MH  - Oral Fistula/pathology/therapy
MH  - Otitis Externa/drug therapy/microbiology/*pathology
MH  - Pseudomonas aeruginosa/isolation & purification
MH  - Temporal Bone/diagnostic imaging
MH  - Therapeutic Irrigation/methods
MH  - Tomography Scanners, X-Ray Computed
MH  - Treatment Outcome
EDAT- 2018/05/26 06:00
MHDA- 2018/06/05 06:00
CRDT- 2018/05/26 06:00
PHST- 2018/05/26 06:00 [entrez]
PHST- 2018/05/26 06:00 [pubmed]
PHST- 2018/06/05 06:00 [medline]
AID - 10.1097/MD.0000000000010898 [doi]
AID - 00005792-201805250-00075 [pii]
PST - ppublish
SO  - Medicine (Baltimore). 2018 May;97(21):e10898. doi: 10.1097/MD.0000000000010898.