Profiling of main metabolites in root exudates and mucilage collected from maize submitted to cadmium stress.

The aim of this study was to characterize qualitatively and quantitatively the composition of the main rhizodeposits emitted from maize (Zea mays) under Cd stress, in order to discuss their role in Cd availability and tolerance. Maize was grown for 6 weeks in sand at four Cd exposure levels (0, 10, 20, and 40 μM Cd in nutrient solution) and two types of rhizodeposits were collected at the end of cultivation period. Mucilage and other molecules adhering to rhizospheric sand were extracted with a buffer before root exudates were collected by diffusion into water.

Is non-operative management of severe blunt splenic injury safer than embolization or surgery? Results from a French prospective multicenter study.

Purpose Of The Study: The management of the severe blunt splenic injuries remains debated. The aim of this study is to evaluate the morbidity and mortality of splenic injury according to severity and management (surgery, embolization, non-operative management [NOM]).

Methods: A prospective multicenter study was conducted including patients aged 16 years and older with diagnosed splenic injury.

A case of primitive floor of the mouth paraganglioma in a child: an embryological theory unifying viscerocranium appended paragangliomas.

Background: Paragangliomas are unusual tumors in the head and neck originating from the paraganglia or glomus cells of neural crest origin.

Methods: We describe the first case of a primitive paraganglioma of the floor of the mouth presenting in childhood.

Results: Complete surgical removal was performed after embolization of the left lingual artery.

Abdominal dermolipectomies: early postoperative complications and long-term unfavorable results.

A retrospective study was done on a population of 258 women who had undergone surgery for abdominal dermolipectomy between January of 1991 and May of 1996. The postoperative complications and flaws seen at long-term follow-up are discussed. The surgical techniques used, with or without lipoaspiration, were the infraumbilical plasty and full plasties with horizontal or inverted T scars.

[The importance of early surgery in preventing the esthetic sequelae of cervicofacial mucocutaneous hemangiomas in children].

Infants with cutaneous hemangiomas are classically managed medically, well-defined surgery being planned for esthetic correction at the age of 8 to 10 years. We present a series of 65 cases of early surgery in children with head and neck cutaneous or mucosal hemangiomas where irreversible and unesthetic scars were predictable. The surgical procedure was simple and the cosmetic result was better than could be expected after late surgery, limiting psychological consequences.

Two unusual tumors in a patient with xeroderma pigmentosum: atypical fibroxanthoma and basosquamous carcinoma.

Xeroderma pigmentosum (XP) is a rare autosomal recessive disease, characterized by a genetic defect in DNA repair. The consequence is a high incidence of skin cancers on sun-exposed cutaneous surfaces of affected children. First lesions appear in the first years of life: telangiectasia, actinic keratosis and keratoacanthomas.

Description of cutaneous excision and suture using a mathematical model.

Mathematical models are being developed at a fast rate in industry thanks to computer technology; they are used to simulate motion and deformation over time to test materials and objects in a virtual manner. These modeling techniques are being developed in medicine, but they remain, at this time, in the domain of biomechanical research. We report a mathematical model for cutaneous excision and suture, which we have used to predict the deformations and tensions that result when using four different forms of excision.

Branchio-oculo-facial syndrome with cleft lip and bilateral dermal thymus.

Objective: The objective of this study was to demonstrate that the branchiooculo-facial (BOF) syndrome is a cervicocephalic neural crest maldevelopment.

Results: Using an embryologic study, we linked the clinical features and the level of the neural crest deficiency. We report here two cases of BOF syndrome with a particular branchial cleft presenting as bilateral supernumerary thymus glands on the surface of the skin; one of the cases was associated with tetralogy of Fallot.

[Congenital giant blue nevus. Apropos of a case].

A case of a three years old girl showing a congenital giant blue nevus, in the neck and the occipital region, is presented. The giant blue nevus was associated to an important cutaneous nevomatosis. The treatment has consisted of an surgical excision of an surgical excision of the main lesion, and operative continuations have been simple.

[Use of iterative expansion in the early surgical treatment of complex nevi of the head in children].

Extensive of congenital pigmented nevi to the face in an infant is an indication for early exeresis to prevent the risk of degeneration. Search for the best esthetic result has led many authors to healthy skin to a maximum, often relying on tissue expansion. The aim of this study was to present the combination of two expansion techniques, prosthetic expansion and differed natural expansion.

[Complex facial nevus in children treated by combination of prosthetic and deferred natural expansions].

Congenital pigmented naevi of the face in children represent indications for early excision and the search for the best aesthetic result has led the authors to prefer the use of skin expansion techniques. The case presented here illustrates the combined use of two expansion techniques: prosthetic expansion and natural differed expansion. This procedure gives good cosmetic results at a moderate overall cost.

[Use of deformities in the treatment of facial skin defects in children: "deforming resections". Report of 35 cases].

Spontaneous resolution of deformities after excision of facial skin lesions has been known and used for a long time by plastic surgeons. The resorption mechanism of deformity is based on natural skin expansion, and seems to be directly related to the action of the muscles of facial expression and their skin relations. Natural expansion has been shown to be effective in children.

[Preservation of sexual innervation in the surgery of rectal cancers].

Eighteen out of 55 rectal resections for cancer included preservation of sexual innervation, which was complete in 17 cases and partial in one case. Fourteen patients were evaluated by questionnaire one year after resection; 10 out of 14 (71.4%) did not report any sexual disorders.