Submandibular gland involvement in oral cavity squamous cell carcinoma: a retrospective multicenter study.

BACKGROUND: The submandibular gland (SMG) is routinely excised during neck dissection. Given the importance of the SMG in saliva production, it is important to understand its involvement rate by cancer tissue and the feasibility of its preservation. METHODS: Retrospective data were collected from five academic centers in Europe. The study involved adult patients affected by primary oral cavity carcinoma (OCC) undergoing tumor excision and neck dissection. The main outcome analyzed was the SMG involvement rate. A systematic review and a meta-analysis were also conducted to provide an updated synthesis of the topic. RESULTS: A total of 642 patients were enrolled. The SMG involvement rate was 12/642 (1.9%; 95% CI 1.0-3.2) when considered per patient, and 12/852 (1.4%; 95% CI 0.6-2.1) when considered per gland. All the glands involved were ipsilateral to the tumor. Statistical analysis showed that predictive factors for gland invasion were: advanced pT status, advanced nodal involvement, presence of extracapsular spread and perivascular invasion. The involvement of level I lymph nodes was associated with gland invasion in 9 out of 12 cases. pN0 cases were correlated with a reduced risk of SMG involvement. The review of the literature and the meta-analysis confirmed the rare involvement of the SMG: on the 4458 patients and 5037 glands analyzed, the involvement rate was 1.8% (99% CI 1.1-2.7) and 1.6% (99% CI 1.0-2.4), respectively. CONCLUSIONS: The incidence of SMG involvement in primary OCC is rare. Therefore, exploring gland preservation as an option in selected cases would be reasonable. Future prospective studies are needed to investigate the oncological safety and the real impact on quality of life of SMG preservation.

Epithelioid Hemangioma of the Face.

An epithelioid hemangioma is a very rare lesion arising from vascular structures. We encountered 2 cases in atypical locations, one in the orbital and the other in the nasal region. We performed preoperative angiography in addition to the diagnostic imaging recommended in the literature. Angiography highlighted the lesions well, and in one case, it was possible to embolize the arterial trunk of a high-flow lesion. Angiography underscored how such lesions may differ from the vascular perspective, emphasizing the importance of histology in correct diagnosis. Management of both hemangiomas yielded good functional and cosmetic outcomes with no disease recurrence.

Oral cavity carcinoma in patients with and without a history of lichen planus: A comparative analysis.

BACKGROUND: Oral potentially malignant disorders (OPMD) are associated with the risk of malignant transformation (MT) into oral cavity carcinoma (OCC). Oral lichen planus (OLP) is one of the most common OPMDs in western countries. Although there is a substantial amount of research on progression to cancer, a specific analysis of the clinical characteristics and prognosis of cancer developed in patients with a history of OLP versus patients without a history of OLP has not been investigated so far. METHODS: Retrospective evaluation of 82 patients treated for OCC with a known history of OLP compared to a representative sample of 82 patients treated for OCC without a known history of LP. Comparative analyses were performed on age at presentation, sex, TNM staging, clinical characteristics, pathology characteristics, 2- and 5-year overall survival (OS), and disease-free survival (DFS). RESULTS: It was shown that patients with a history of LP were significantly younger at first presentation than patients without a history of LP (mean age difference 6.7 years, 95% CI 3.1-10.3, p < 0.05). Also, patients with a history of OLP were in higher proportion females. The main pathological stage at presentation was significantly lower in the OLP group (p < 0.05). The 2-year survival analysis showed that DFS and OS were significantly lower in patients without a known history of OLP, with a hazard ratio (HR) of 3.1 (95% CI 1.4-6.8) and HR of 2.6 (95% CI 1.3-5.3), respectively. The 5-year survival analysis showed that DFS and OS were significantly lower in patients without a known history of OLP, with a hazard ratio of 3.1 (95% CI 1.6-6.2) and of 2.9 (95% CI 1.5-5.6), respectively. CONCLUSIONS: Cancer arising from OLP has peculiar characteristics compared to cancer in naïve patients. It most commonly affects younger patients, women, and nonsmokers. It is usually diagnosed at earlier stages and appears to have less aggressive behavior at presentation. Moreover, when 2- and 5-year survival is analyzed, it appears that patients in OLP group have an overall and a disease-free survival advantage. These results suggest that cancer from OLP is less aggressive and thus has a potential biological difference with cancer arising in non-OLP patients. Further clinical and basic investigations are needed to confirm the results of this study.

Second primary carcinoma arising on a flap: a new primary or a relapse?

BACKGROUND AND AIM: Free flaps or pedicle flaps are the mainstay of cancer surgery in the head and neck area. However, their long-term sequelae are still poorly understood. Among these, the development of a secondary primary tumor on a flap is a rare and uncertain reported event.   Methods: A computer-aided systematic literature search was performed by using the PubMed, EMBASE and Cochrane Library databases. A systematic review of the literature, following the PRISMA checklist, was carried out with the aim of analyzing all the citations reporting this second primary, with attention to risk factors, behavior, etiological causes.   Results: Overall, 27 cases of second primary squamous cell carcinoma arising on a pedicle or free flap were identified. In addition, other three cases were discussed.   Conclusions: Persistent exposure to oral stimuli such saliva, oral microbiome, smoke or a colonization by the adjacent mucosa were considered as a possible cause of second primary carcinoma. Although rare, a new neoplasm onset should know and considered as a new concept in the follow-up of patients undergoing reconstruction with free or pedicle flaps.

The potentialities of the Anatomage Table for head and neck pathology: medical education and informed consent.

INTRODUCTION: The understanding of anatomy of head and neck region and of the relative pathological conditions may be challenging for most medical students. Furthermore, patients may encounter great difficulties to understand their pathology, the proposed surgical technique, as well as the anatomy of this body district. The purpose of the present study was to present and discuss the use of the Anatomage Table for the assessment of several benign and malignant conditions of head and neck district. MATERIALS AND METHODS: The hospital database of Novara University Hospital, Novara, Italy, was searched for odontogenic keratocysts, thyroglossal duct cysts, and oral squamous cell carcinomas. A case for each pathology was randomly chosen, and preoperative computed tomography (CT) scans (in DICOM files) were retrieved. The DICOM data of preoperative CT examinations were uploaded in the Anatomage Table device, and an immediate 3-D reconstruction image was obtained from the Anatomage Table. Then, a workstation was used to obtain images of the body surface, "dissection cuts," or "vascular reconstructions," by the variations of the filters. RESULTS: The "dissection," "vascular," and "bony" images of three cases of odontogenic keratocyst, thyroglossal duct cyst, and mandibular oral squamous cell carcinoma were produced and presented. DISCUSSION: The examination of the different slices and the application of different filters represent a promising tool both for the education of students/residents and for an improved informed consent by the patients.