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This second article deals with the application of basic oncology principles which are described in relation to present research trends in oral oncology. The importance of the immunological aspects relative to detection and treatment in conjunction with a better understanding of the risk factors involved are hallmarks of this recent research.
The authors review the literature regarding bioptic techniques which are used in oral oncology, particularly referring to the dispute about incisional and excisional biopsy in cases of neoplastic or suspected lesions. As a matter of fact, though incisional biopsy at the oral cavity level is an easily executed technique, some clinicians found that an incision of a neoplasia could help its spreading or could help its spreading or could even increase its malignancy. Nevertheless, analyzing the literature, it can't be found, at present, the existence of data based on real clinical survey, which could prove a worse prognosis subsequent to a certain bioptic approach, even if some experimental studies on animal models, pointed out the potential danger caused by a neoplasia's incision. But, according to the authors, the oncological risk of metastasis' formation or of a local insemination is irrelevant if the operator follows the general rules of oncological surgery. To conclude, the authors present their diagnostic operative protocol, based on the principle that the diagnosis must always precede the treatment of the pathology. Therefore, when the size and site of the lesions allow it, incisional biopsy (simple or multiple) must always be chosen and, if necessary, must be preceded by the tolonium chloride stain.
PURPOSE: This study reports the anatomy, operative technique, and postoperative results of the temporal fasciocutaneous island flap (TFCIF), as used for facial and intraoral reconstruction. MATERIALS AND METHODS: Retrospective study of 15 patients who underwent TFCIF reconstruction. The anatomic basis and surgical technique are described. The flap was used for mucosal reconstruction after cheek or maxillary resection. It was used for facial tissue loss in 2 cases: orbital osteoradionecrosis and exposure of a mandibular reconstruction plate. RESULTS: This technique provides a safe and rapid solution for intraoral reconstruction; however, it cannot be used for the anterior floor of the mouth. The best indication that we have found is the reconstruction of hemimaxillectomy, allowing closure of buccosinusonasal communication and prosthetic rehabilitation. The main disavantage is that hair regrowth limits its use to patients who need postoperative radiotherapy. Donor site morbidity is minimal. Only a partial failure was observed. CONCLUSION: The TFCIF is a rapid, safe, and useful flap for oral and facial reconstruction after oncologic resection. Its arc of rotation limits, however, its use to the posterior part of the oral cavity.
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Autofluorescence spectroscopy and imaging have been studied for the early detection and classification of (pre)malignancies of the oral mucosa. In the present review we will give an overview of the literature on autofluorescence imaging and spectroscopy for various clinical questions. From the studies performed so far we hope to conclude whether autofluorescence spectroscopy and imaging are helpful in the diagnosis of lesions of the oral mucosa, and if this is the case: for which clinical questions they are suitable. A strong emphasis is put on in vivo human studies of the oral mucosa.
This study reviews reconstruction of complex three-dimensional oral and maxillofacial defects using the single free radial forearm flap or the single free rectus abdominis musculocutaneous flap. Between 1996 and 2003, 124 patients underwent oral and maxillofacial reconstruction in the Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine. Outcomes for 22 patients who underwent three-dimensional reconstruction of multiple surfaces were evaluated. Reconstruction was performed after resection of malignant tumors in all 22 patients. Single FAFs were utilized for 11 patients and single RAMs for the remaining 11. Flap survival rate was 100%. No major donor morbidity was observed, and all surviving patients (20/22) were able to perform normal daily living activities. Single FAF and RAM are useful materials for one-stage reconstruction of complex three-dimensional oral and maxillofacial defects requiring replacement of skin, mucosa, and intervening soft tissues. Good to excellent aesthetic results can be attained in most patients.
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BACKGROUND AND OBJECTIVES: Autofluorescence and diffuse reflectance spectroscopy have been used separately and combined for tissue diagnostics. Previously, we assessed the value of autofluorescence spectroscopy for the classification of oral (pre-)malignancies. In the present study, we want to determine the contributions of diffuse reflectance and autofluorescence spectroscopy to diagnostic performance. STUDY DESIGN/MATERIALS AND METHODS: Autofluorescence and diffuse reflectance spectra were recorded from 172 oral lesions and 70 healthy volunteers. Autofluorescence spectra were corrected in first order for blood absorption effects using diffuse reflectance spectra. Principal Components Analysis (PCA) with various classifiers was applied to distinguish (1) cancer and (2) all lesions from healthy oral mucosa, and (3) dysplastic and malignant lesions from benign lesions. Autofluorescence and diffuse reflectance spectra were evaluated separately and combined. RESULTS: The classification of cancer versus healthy mucosa gave excellent results for diffuse reflectance as well as corrected autofluorescence (Receiver Operator Characteristic (ROC) areas up to 0.98). For both autofluorescence and diffuse reflectance spectra, the classification of lesions versus healthy mucosa was successful (ROC areas up to 0.90). However, the classification of benign and (pre-)malignant lesions was not successful for raw or corrected autofluorescence spectra (ROC areas <0.70). For diffuse reflectance spectra, the results were slightly better (ROC areas up to 0.77). CONCLUSIONS: The results for plain and corrected autofluorescence as well as diffuse reflectance spectra were similar. The relevant information for distinguishing lesions from healthy oral mucosa is probably sufficiently contained in blood absorption and scattering information, as well as in corrected autofluorescence. However, neither type of information is capable of distinguishing benign from dysplastic and malignant lesions. Combining autofluorescence and reflectance only slightly improved the results.
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Thalidomide is having increasing application in the management of a wide spectrum of immunologically-mediated and infectious disorders. It is also suggested that this agent may also have be of importance in the treatment of solid and non-solid malignancies. The present article reviews the role of thalidomide in the management of malignancy and outlines its possible potential in the treatment of malignancy of the mouth.
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