Publications by authors named "Downie I"

The Rationale: Presentation of a case where using an endoscope aided the removal of a significantly displaced mandibular third molar.

Patient Concerns: Pain and infection associated with the ectopic wisdom tooth, increased risks with conventional surgical removal.

Diagnosis: Chronic infection associated with the displaced, ectopic left lower third molar (LL8).

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We previously published a study on the provision of emergency maxillofacial services during the first UK COVID-19 pandemic national lockdown. We repeated the study during the second lockdown and now present our findings that highlight the main differences and learning issues as the services have evolved.

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Article Synopsis
  • The COVID-19 pandemic challenged healthcare systems, particularly affecting Oral and Maxillofacial Surgery due to high risk of virus transmission during procedures.
  • A study was conducted from March to May 2020 in the UK to monitor maxillofacial emergencies across five hospitals, involving 529 patients with various injuries, infections, and complications.
  • Key findings indicated that a significant number of cases could be managed remotely, with a shift towards virtual consultations, highlighting the need for adaptations in emergency care during and after the pandemic.
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Article Synopsis
  • The incidence of injuries among prisoners is significantly higher than the general population, with maxillofacial trauma being particularly common.
  • Based on cases of 12 patients, eight management challenges have been identified, including inconsistent injury reports, complex fractures, delayed treatment, dental issues, medical complications, risk of post-release violence, and follow-up difficulties.
  • Addressing these challenges can enhance the quality of care provided to incarcerated individuals with maxillofacial injuries.
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In some units, lower wisdom teeth are extracted in a separate procedure before bilateral sagittal split osteotomy (BSSO), whereas in others they are removed at the time of the osteotomy. We identified 57 patients who had BSSO at Salisbury Hospital between October 2013 and September 2015, 40 of whom had their wisdom teeth extracted at the same time. The remaining 17 did not have wisdom teeth.

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Horner's syndrome and Harlequin syndrome are both caused by disruptions to the sympathetic supply to the face. They have a varied aetiology, including intraneural dysfunction, extra- or intraneural compression, and idiopathic as well as iatrogenic causes. Horner's syndrome can occur as a rare complication of thyroid surgery and the Harlequin sign has only been documented as a complication of cervical surgery in a handful of paediatric patients.

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We prospectively studied 21 cases of attachment of the lingual frenulum treated with laser excision, and report the results of a questionnaire survey of patients in the immediate postoperative phase.

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The authors report their experience with 34 patients who had large full thickness nasal defects reconstructed with an implant-retained prosthesis. Their technique of modifying post-rhinectomy defects is described and factors influencing implant success are evaluated. 111 implants were placed to retain a nasal prosthesis.

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Dental implants have proved to be a useful adjunct in the rehabilitation of oral cancer patients. We describe the case of a 62-year-old woman who presented with a white patch in the oral cavity, diagnosed to be a squamous cell carcinoma. She underwent extensive surgery including microvascular reconstruction, followed by implant rehabilitation.

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Large rhinectomy defects can be reconstructed with endosseous craniofacial implants and an alloplastic implant-retained prosthesis. The survival of the implants and prosthesis is aided by the placement of split skin grafts. A simple and effective technique is described to enable accurate placement of a split skin graft in a single piece, by shaping it 'like an elephant'.

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A case of transient left lateral rectus nerve palsy, following an inferior alveolar nerve block to enable the surgical removal of a permanent mandibular left third molar tooth, is reported. The anatomy related to this case is considered together with suggestions for management of such patients.

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Immunohistochemistry for thyroid transcription factor-1 (TTF-1) is considered an important ancillary technique for distinguishing primary pulmonary adenocarcinomas from metastases. A case of metastatic colonic adenocarcinoma in a bronchial biopsy specimen that showed focal positive nuclear staining for TTF-1 is reported here. The primary colonic adenocarcinoma was retrieved from the file and immunostaining also showed focal nuclear positivity for TTF-1.

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The role of immunohistochemical markers in distinguishing peritoneal mesothelioma from primary or metastatic serous papillary carcinoma of the peritoneum was evaluated. We immunostained 20 peritoneal mesotheliomas (from 14 men and 6 women), 14 primary peritoneal carcinomas, and 14 metastatic serous ovarian carcinomas with a panel of 16 antibodies. Positive staining for calretinin was identified in 17 (85%) of 20 mesotheliomas, but all carcinomas were negative.

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Malignant tumours of the nose occasionally require rhinectomy. Implant retained prostheses can give good aesthetic results. Predictable biomechanical retention of nasal prostheses can be achieved using osseointegrated implants and Brånemark intra-oral and craniofacial implants have been used previously.

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Purpose: Patients with metastatic adenocarcinoma of unknown origin are a common clinical problem. Knowledge of the primary site is important for their management, but histologically, such tumors appear similar. Better diagnostic markers are needed to enable the assignment of metastases to likely sites of origin on pathologic samples.

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Purpose: There has been much interest in the role that the signaling molecule nitric oxide (NO) plays in cancer. NO has both tumor-promoting and tumor-inhibiting effects that are dependent on its local tissue concentration. In animal studies, the administration of exogenous NO has reduced both tumor growth and dissemination, and in vitro NO administration causes death of oral cancer cell lines.

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Through previous large-scale gene expression profiling we identified a transcript that was abundant in normal stomach and down-regulated in gastric cancer. Genes expressed at similar levels included gastrin, MUC5 and pS2, which are important in gastric function. We aimed to characterise this candidate, gastrokine 1 (GKN1), at mRNA, DNA, protein and tissue levels.

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Gastric carcinoma is the fourth most common cause of cancer death worldwide but its molecular biology is poorly understood. We catalogued the genes expressed in two gastric adenocarcinomas and normal stomach, using serial analysis of gene expression (SAGE), and compared the profiles on-line with other glandular epithelia. Candidates were validated by Northern blotting and immunohistochemistry.

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