Membrane-based preparation for mass spectrometry imaging of cultures of bacteria.

The study of the dialogue between microorganisms at the molecular level is becoming essential to understand their relationship (antagonist, neutral, or beneficial interactions) and its impact on the organization of the microbial community. Mass spectrometry imaging (MSI) with matrix-assisted laser desorption/ionization (MALDI) is a technique that reveals the spatial distribution of molecules on a sample surface that may be involved in interactions between organisms. An experimental limitation to perform MALDI MSI is a flat sample surface, which in many cases could not be achieved for bacterial colonies such as filamentous bacteria (e.

Quantifying time-dependent structural and mechanical properties of UV-aged LDPE power cables insulations.

This paper reports effects of ultraviolet (UV) light radiation on the physicochemical, electrical and mechanical properties of low-density polyethylene (LDPE) cable insulating materials. Changes in structural and morphological properties of UV-aged samples were characterized by various analytical methods such as attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM). Additionally, elongation at break, tensile strength, dielectric strength, and optical properties were also evaluated.

Orbital myeloid sarcoma misdiagnosed for subperiostal hematoma: a case report.

Background: Myeloid sarcoma is a solid tumor that consists of immature myeloid cells occurring at an extramedullary site. It can present before, concurrent with, or after the diagnosis of acute myeloid leukemia or other myeloproliferative diseases, and a proportion of patients never develop bone marrow infiltration. Only a few isolated cases of pediatric orbital myeloid sarcoma have been reported, and they are often associated with a high misdiagnosis rate.

Neglected ballistic trauma of the face in a young subject: A case report.

Injuries by ballistic projectiles concern nowadays more and more frequently civilian populations. If the vital prognosis is rarely put at risk, the functional after-effects are frequent and important. The management of these injuries follows specific rules that must be known because they are sometimes different from the usual traumatology.

Contralateral traumatic carotid cavernous fistula after a craniomaxillofacial fracture.

Introduction: Carotid-cavernous fistula is an abnormal communication between the internal carotid artery, the external carotid artery or any of their branches and the cavernous sinus. This condition may occur spontaneously or after craniofacial trauma; in this case the fistula takes place on the same side as the craniofacial fracture and becomes symptomatic within a few weeks. The diagnosis is clinical; it must be evoked before any post-traumatic proptosis.

Nasal syringocystadenoma papilliferum in an elderly subject aggravated by Koebner's phenomenon after surgery: A case report.

Syringocystadenoma papilliferum is a rare benign adnexal tumour of the sweat glands. It is considered an infantile tumour since it preferentially affects the newborn in 50% of cases and the child before puberty in 15-30% of cases. And its preferential location is the head and neck, but rare in the face.

Ameloblastoma giant: Diagnosis, treatment and reconstruction: A case report.

Introduction: Ameloblastoma is a rare tumor, benign but rapidly extensive and prone to recurrence. Its management remains difficult and its treatment relies mainly on surgery. For giant ameloblastoma or in people with an advanced stage the gesture remains very mutilating.

Repair of the orbital floor fractures: The endoscopic trans-maxillary approach as minimally invasive approach: A case-report.

Introduction: The endoscopy in orbital surgery provides, similar to other surgical fields, the option of combining an extended view of the surgical field with minimally invasive approaches; also allows an excellent functional and esthetic results. Trans-maxillary endoscopy of the orbital floor offers excellent visualization of the posterior bony shelf and confirms that the implant rests securely in place.

Presentation Of Case: The authors report a ten years-old male child, reported to the oral and maxillofacial surgery department, Ibn Rochd university hospital, Casablanca, Morocco.

Parotid swelling revealing an unusual pathological state: HIV and ewing sarcoma.

Swelling of the parotid region is a frequent reason for consultation and the first clinical sign of both benign and malignant parotid tumors. These parotid tumors represent 80 % of tumors of the main salivary glands. They present a highly variable clinical and radiological picture and are known to have a wide histological diversity.

Locoregional anesthesia for removal osteosynthesis hardware from healed corpus mandibularis fractures: A descriptive study of a series of 40 cases.

Introduction: Locoregional anesthesia represents a very interesting modality for the removal of osteosynthesis hardware of the corpus mandibularis. Several procedures have been described, but each is dedicated to a single mandibular segment.

Material And Methods: The surgical records of 40 patients treated with rigid internal fixation after maxillofacial traumas were reviewed.

Unusual cervicofacial localization of two subcutaneous tuberculous cold abscesses in an immunocompetent subject.

Introduction: Subcutaneous tuberculous cold abscesses represent a rare form of extra-pulmonary tuberculosis and their cervicofacial localization is exceptional. The management of this unusual form and location is medico-surgical and must be adapted to avoid progression to complications.

Case Report: We report the case of a double cervicofacial localization of subcutaneous tuberculous cold abscesses in an immunocompetent patient followed for pulmonary tuberculosis who benefited from a surgical drainage of the two abscesses with anti-tuberculosis treatment with good clinical evolution.

Seborrheic keratosis of the cheek simulating squamous cell carcinoma.

Introduction: Seborrheic keratoses are benign tumours that occur electively on the head, neck and trunk. It can be confused on its clinical appearance with other skin tumours and it is the histological examination that establishes the diagnosis. We report a case of seborrheic keratosis simulating squamous cell carcinoma.

Cervicofacial cellulitis on vascular malformation: About two case reports.

Cervicofacial cellulitis is a brutal and dreadful disease that poses a serious problem in terms of therapeutic management. Most often, these cellulitides occur either in a fragile environment or after inappropriate initial management. We report two (02) observations of cervicofacial cellulitis in patients with vascular malformation of the face.

Parotid lymphoepithelial cysts revealing HIV infection in a 12-year-old girl: A case report.

Introduction: and importance: benign lymphoepithelial cysts are benign lesions consisting of one or more cysts of the salivary glands or neck regions that occur in 3-6% of patients with positive HIV serology. The objective of this work is to discuss the link between HIV and benign lymphoepithelial cysts.

Case Presentation: The authors report a case of benign lymphoepithelial parotid cysts in a 12-year-old girl who underwent a partial parotidectomy.

The high subangulomandibular approach for condylar fractures of the mandible.

Introduction: The approaches to mandibular condyle fractures are described in the literature in an abbreviated manner. Their complications, especially facial nerve damage, have limited the surgical indication.

Presentation Of Case: Through this clinical case, we reported the way and the interest of using a twisted steel wire to increase the visibility of the fracture site and facilitate the reduction of even the highest localized fractures.

Squamous cell carcinoma during long term hydroxyurea treatment: A case report.

Background: Hydroxyurea (HU) is a ribonucleotide diphosphate reductase inhibitor that interferes with the S phase of cell replication and inhibits DNA synthesis, with limited or no effect on RNA or protein synthesis. The cutaneous side effects of hydroxyurea treatment are diverse and frequent. Squamous cell carcinoma is one of the most challenging side-effect.

Congenital bilateral zygomatico-maxillo-mandibular fusion associated with gumfusion: Case report.

Introduction: Maxillomandibular sygnathia is a rare and severe craniofacial deformity defined by gingival mucosal fusion (synechia) or bony fusion (synostosis).

Case Report: We will present a case of complete closure of the mouth since birth from eastern Morocco treated in our department of maxillofacial surgery at the University Hospital of Casablanca. The patient was referred after two months by the pediatrician of the provincial hospital and following the placement of a nasogastric tube.

Synovial sarcoma of the maxillary sinus and chest wall: An exceptional association of two synchronous rare locations, Case report.

Introduction: Synovial sarcoma is a malignant tumour of mesenchymal origin with an aggressive character and a rare cervicofacial location. Its management is multidisciplinary in order to improve prognosis and survival.

Case Report: We report the case of two rare and synchronous localizations of monophasic synovial sarcoma of the maxilla and chest wall in a 58-year-old woman, whose management was based on exclusive chemotherapy.

Cutaneous adenoid cystic carcinoma of lower eyelid: Case report of a rare malignant entity.

Introduction: cutaneous adenoid cystic carcinoma is a rare epithelial tumor with slow development, it is most often described in the scalp; palpebral involvement is very rare. And is accompanied by local aggressiveness and frequent recurrence. The aim of this work is to discuss the management and the interest of a close surveillance of adenoid cystic carcinoma.

Mucoepidermoid carcinoma of the retromolar trigone in an elderly female: A case report.

Tumors of the retromolar trigone area represent 12% of neoplasms of the oral cavity, and of which squamous cell carcinoma represents the main histological type. Mucoepidermoid carcinoma (MEC) of the accessory salivary glands is a rare entity, representing less than 5% of head and neck cancers, and 10% of all salivary gland tumors; its biological characteristics are very diverse, correlated to the histological grade of the tumor. This tumor has an excellent outcome after surgical management, with a prognosis related to the histological grade of the tumor.

Well-differentiated liposarcoma of the cheek misdiagnosed for lipoma: A case report.

Introduction: Liposarcoma is the most common sarcoma entity and accounts for 17% to 30% of soft tissue sarcomas. There are several histological types including well-differentiated liposarcoma. This paper aims to underline the interest of immunohistochemical and cytogenetic studies to diagnose well-differentiated liposarcoma and to show the delicacy of performing a surgical procedure in the cheek area.

Bone choristoma of the gingiva: A case report.

Introduction: Bone choristoma is a benign tumor with normal histology and ectopic location. This paper aims to report a rare case of bone choristoma in the maxillary gingival location.

Observation: The authors report a case of a 39-year-old woman, with a history of maxillary full edentulousness, who consulted for a slight pain evolved for about six months, triggered by movements on the lesion.

The solitary plasmacytoma of mandible: A case report.

Background: the solitary plasmacytomas entities characterized by the neoplastic proliferation of a single clone of plasma cells, typically producing a monoclonal immunoglobulin. It represents less than 5% of plasma cell dyscrasias. The most common sites of solitary plasmacytomas are long bones.