https://dspace.univ-ouargla.dz/jspui/handle/123456789/37851 Sun, 12 Apr 2026 03:36:30 GMT 2026-04-12T03:36:30Z https://dspace.univ-ouargla.dz/jspui/handle/123456789/37873 Titre: LES HÉMANGIOBLASTOMES DE LA FOSSE CÉRÉBRALE POSTÉRIEURE (à propos de 21 cas) Auteur(s): SAMAI N; NACER H; SAMAI I; BOUAZIZ M Résumé: Hemangioblastomas are benign vascular tumors of the central nervous system that can occur sporadically or as part of Von Hippel Lindau disease (VHL). The study of the 21 cases of hemangioblastomas collected in the Neurosurgery Department of CHU IBN ROCHD Annaba involves a pure infratentorial involvement. No localization in the rest of the neuraxis or visceral has been detected. All the patients had a sporadic hemangioblastoma. The clinical picture is dominated by the syndrome of increased intracranial pressure (ICP) and the cerebellar syndrome, and in all cases, it was the increased ICP that was the initial revelation. MRI and CT are the two preferred paraclinical methods: MRI is more sensitive in revealing the presence of the tumor, its characteristics (location, size, volume, exact number...) and the localization of the cystic portion of the tumor, its relationship with the mural nodule as well as its repercussions on the ventricular cavities. The diagnosis of infratentorial hemangioblastoma has a poor prognosis due to postoperative mortality, the risk of recurrence, and multiple locations. The treatment consists of as complete a tumor removal as possible, and the diversion of associated hydrocephalus can be discussed in certain cases. Post-operative monitoring is carried out using MRI, which can detect a recurrence by revealing a cyst or ventricular dilation. Finally, in individuals with a family history of Von Hippel Lindau disease, it would not be excessive to conduct periodic ophthalmic examinations and brain MRIs Description: Revue des BioRessources Tue, 31 Dec 2024 00:00:00 GMT https://dspace.univ-ouargla.dz/jspui/handle/123456789/37873 2024-12-31T00:00:00Z https://dspace.univ-ouargla.dz/jspui/handle/123456789/37871 Titre: VASCULARISATION DE LA MAIN ET SON INTÉRÊT PRATIQUE SUR LES LAMBEAUX CUTANÉS DE LA MAIN Auteur(s): NACER H; SAMAI N; SAMAI I Résumé: The hand constitutes a very particular and characteristic anatomical region; trauma can permanently alter its essential functions. Its blood supply is dependent on the radial and ulnar arteries and the anastomoses that unite them. Many variations can modify this typical diagram. Our series included 100 hands of adults with post-traumatic substance loss requiring skin flap coverage, preceded by CT angiography of the upper limb. The study was carried out at the orthopaedicstraumatology department of Ibn Rochd-C.H.U Annaba Hospital over 10 years, spread between June 2014 and June 2024. 100 CT angiography of the hand, including the frequency of patients with post-traumatic skin loss of the hand requiring skin coverage with a male flap, is 84%, and the average age of the patients is 28 years. Work accidents dominate with a frequency of 75%, the causal tool of which was a sharp object (67%), and the most affected finger was the thumb (65%). In total, we have found three types of arches: U7.R3, U5.R5, and U10.R0. Type U7.R3 presents 74% of all cases; type U5.R5 presents a frequency of 24%, and type U10.R0 presents a frequency of 02% of all cases. Our study allowed us to identify the frequency of hand trauma with loss of substance often affecting young males and the usefulness of CT angiography in the exploration of the arteries of the hand, highlighting the different types of arcades. Description: Revue des BioRessources Tue, 31 Dec 2024 00:00:00 GMT https://dspace.univ-ouargla.dz/jspui/handle/123456789/37871 2024-12-31T00:00:00Z https://dspace.univ-ouargla.dz/jspui/handle/123456789/37870 Titre: BASE ANATOMIQUE DE LA MAIN Auteur(s): NACER H; SAMAI N; SAMAI I Résumé: The hand is the distal part of the upper limb and has two regions: the palmar region and the dorsal region. The palmar region includes all the soft parts located in front of the bones and joints of the hand, as well as in the intermetacarpal spaces. The dorsal region of the hand is made up of the soft parts located behind the skeleton. The hand is the direct functional expression of the brain, it provides the upper limb with support functions and motor perfection. Its precision and skill thus allow creative action on the external environment to use or transform it. Exploration of the hand by anatomical dissection was carried out on six embalmed and fresh cadaveric hands. The hand was extended on a board, palmar side up, with the fingers spread apart and fixed by their ends using nails. Several skin incisions were made, allowing exploration of the hand plane by plane Description: Revue des BioRessources Tue, 31 Dec 2024 00:00:00 GMT https://dspace.univ-ouargla.dz/jspui/handle/123456789/37870 2024-12-31T00:00:00Z https://dspace.univ-ouargla.dz/jspui/handle/123456789/37869 Titre: INTRACRANIAL EPENDYMOMAS IN CHILDREN Auteur(s): SAMAI N; NACER H; SAMAI I; BOUAZIZ M Résumé: Ependymomas are malignant glial tumors of the central nervous system. Although they are recognized in all age groups, they are more frequent in children, accounting for between 5 and 10% of all pediatric intracranial tumors. Due to its aggressive nature and fairly frequent occurrence in the pediatric population, our study was conducted to specify the epidemiological, clinical, and paraclinical profile as well as to evaluate the therapeutic means and results and the follow-up in 24 children collected in the neurosurgery department, CHU IBN ROCHD over 12 years (from January 2012 to December 2023). The age of our patients ranged from 1.5 to 17 years, with a mean age of 8.29 years, of which 10 were girls and 14 were boys. Headaches associated with nausea and vomiting were the most frequent symptoms. Time to consultation ranged from 1 to 7 months, with an average of 4 months. Radiologically, an MRI was performed on all patients with infratentorial localization (FCP). The most frequent histological type was WHO grade III ependymoma. Surgery, and more specifically, complete excision, is the cornerstone of ependymoma treatment. In our series, 13 children underwent adjuvant external radiotherapy, with a 14-week mean time between surgery and radiotherapy. 54.16% of the children in our series received chemotherapy. In terms of evolution, we have 50% of our patients alive, 56.33% in complete remission after 3 years, 16.66% deceased, and 25% lost to follow-up. Childhood ependymoma is a pathology in the throes of change. The new anatomomolecular classification opens up unprecedented prospects for a detailed understanding of therapeutic strategy. The mainstay of treatment is complete surgery, and the role of radiotherapy remains essential in children Description: Revue des BioRessources Tue, 31 Dec 2024 00:00:00 GMT https://dspace.univ-ouargla.dz/jspui/handle/123456789/37869 2024-12-31T00:00:00Z