Revue de laryngologie - otologie - rhinologie, 2011
Sinonasal inverted papilloma is a rare benign tumor with a high recurrence rate and potential mal... more Sinonasal inverted papilloma is a rare benign tumor with a high recurrence rate and potential malignant transformation. The purpose of this study was to analyze the clinical and radiological aspects and to identify the suitable surgical approaches to be used in developing countries. In 3 years, 7 cases have been analyzed in a retrospective study. Patients presented with unilateral nasal obstruction and epitasis, a whitish unilateral polypoid mass, sinonasal opacity with osteolysis on CT scan or on sinus X-ray. Using these data we adopted the Krouse staging which classifies the disease in four stages and accordingly the appropriate surgical approach was used. The diagnosis was confirmed by histological examination of the biopsied specimen. Average age 48.28 years, predominant sex male. Symptom: unilateral nasal obstruction 5, bilateral nasal obstruction 1, epistaxis 5. The average time-delay before consultation was 73 months. The combined endonasal endoscopic and vestibular was the m...
Revue de stomatologie et de chirurgie maxillo-faciale, 2005
Cemento-ossifying fibroma is a rare benign tumor which can affect both jaw bones, particularly th... more Cemento-ossifying fibroma is a rare benign tumor which can affect both jaw bones, particularly the mandible. We report two cases of cemento-ossifying fibroma which illustrate the radiological and anatomic features of these tumors. Differential diagnosis between cementifying fibroma and ossifying fibroma was particularly difficult. The cementifying fibroma was treated by surgical resection followed by immediate reconstruction with an iliac bone graft. The ossifying fibroma was treated by enucleation-resection. The clinical, radiological and histological features of cementifying and ossifying fibroma allow distinction. Surgical treatment is achieved by enucleation resection for small-sized ossifying fibromas and mono-bloc resection with bone reconstruction for large-sized cementifying and ossifying fibromas.
Revue de laryngologie - otologie - rhinologie, 2002
Haemorrhagic cysts of the parathyroid gland are rare. Our case report concerns a presentation wit... more Haemorrhagic cysts of the parathyroid gland are rare. Our case report concerns a presentation with a constrictive cervical haematoma, confirmed by ultrasound-guided aspiration. The haematoma, rapidly recurred, indicating exploration of the neck and haemostasis. Histological examination of excised tissue showed the haemorrhagic nature of the cyst.
ABSTRACT Background Crossed cerebellar diaschisis (CCD) has been reported on positron-emission to... more ABSTRACT Background Crossed cerebellar diaschisis (CCD) has been reported on positron-emission tomography and single-photon emission computed tomography of stroke patients. Rarely it has been described with brain diffusion-weighted MRI (DWI) of status epilepticus (SE). Methods Case report. Results A 53-year-old woman was found unresponsive after cocaine use. A diagnostic electroencephalogram was consistent with ictal SE. A brain DWI showed reduced diffusion in the left temporo-parietal and occipital cortexes, the left thalamus and the right cerebellum. The DWI changes did not correspond to a vascular territory and were attributed to seizure activity and secondary CCD. A 2-week follow-up DWI showed interval near-complete resolution of the diffusion changes. CCD in SE may represent injury caused by excessive neuronal transmission from prolonged excitatory synaptic activity via the cortico-pontine-cerebellar pathway. Alternatively, it may be a result of interruption of the cortico-pontine-cerebellar pathway with loss of cortical inhibitory input. Conclusion This case documents CCD during SE, providing further evidence of contralateral cerebellar involvement with a supratentorial epileptiform focus.
Annales françaises d'anesthèsie et de rèanimation, 2000
A 18-year-old patient injected intravenously 2.5 mL of paraffin oil into the right upper limb. It... more A 18-year-old patient injected intravenously 2.5 mL of paraffin oil into the right upper limb. It caused a local thrombophlebitis with a slow evolution. A collapsus occurred on the sixth day. The authors obtained a clinical recovery of the limb after heparine and oral anticoagulation.
Orthopaedics & traumatology, surgery & research : OTSR, 2013
Retractile fibrosis of the quadriceps (RFQ) is a physical and social handicap in children, and of... more Retractile fibrosis of the quadriceps (RFQ) is a physical and social handicap in children, and often results from a past history of quadriceps intramuscular injection. The aim of this study was to evaluate the therapeutic results of RFQ treated by distal quadricepsplasty using a modified Thompson-Payr procedure (DQPMTP). Functional recovery will be good with DQPMTP. This is a descriptive retrospective 10-year study from 2002 to 2011, including 74 children (88 knees) less than 15 years old, admitted for RFQ and treated in Benin. The types of RFQ were: knee flexion loss of motion 16 cases (18.2%), lag of extension 54 cases (61.4%) and associated genu recurvatum, 18 cases (20.5%). Wasting of the thigh was found in all cases. An associated distal femoral osteotomy was performed to correct a bone deformity in 18 cases (20.5%). There were 16 cases (18.2%) of poorly looking postoperative scars and 2 cases (2.3%) of fracture during physical therapy. Mean flexion ROM after surgery was 77.7°....
Femoral bifurcation associated with tibial aplasia of the limb is a very rare pathology. Its radi... more Femoral bifurcation associated with tibial aplasia of the limb is a very rare pathology. Its radical treatment is a disarticulation of the knee, followed by fitting of a prosthesis. In Benin the reluctance of parents to allow their children to undergo amputation and the access to equipment for the amputated child are a major technical and financial hindrance. Here we report three cases.
Morphologie : bulletin de l'Association des anatomistes, 2005
The purpose of this work is to study the skeleton maturation in the black population of Benin by ... more The purpose of this work is to study the skeleton maturation in the black population of Benin by means of Tanner Whitehouse method (TW2) in comparison with the populations of the developed countries. The study was transversal and analytic. It included 297 boys and 303 girls aged from 9 to 18 years. This was conducted from October 2002 to May 2003 in Cotonou City, the economic capital of Benin. The corrected minimum size of the sample was 384 x 1.19. The sampling technique was chancy, multiphasic, stratified and in clusters. Every one of the 13 districts of Cotonou was considered as a stratum. The interpreter of the anteroposterior radiograph of the left wrist and hand was selected after an intra and extra observer test. The data treatment and analysis were performed by the logiciels Epi info and SPSS. The statistical tests used were Khi 2 test and Kappa index. The sample was mainly composed of pupils: 84.16% among the boys, 77.23% among the girls. 91.01% of the parents of the childr...
Apert's syndrome is a type of acrocephalosyndactylia that is from part of the great group of ... more Apert's syndrome is a type of acrocephalosyndactylia that is from part of the great group of craniofacial synostoses. It is characterized by craniofacial dysmorphia and syndactylia on hands and feet, which differentiates it from Crouzon's disease. It is a rare affection that is often transmitted through an autosome dominant mode, but sporadic cases exist. We report the case of a 15-year-old girl who presented characteristic clinical signs of Apert's syndrome with normal karyotype without parental consanguinity. The Ser 252 Trp mutation of the FGFR2 gene was found, confirming the molecular diagnosis. This study illustrates the severity of ocular and neurological problems of untreated Apert's syndrome. The presence of hemoglobinopathy (Hb AS) is also a mark of its originality.
ABSTRACT Purpose The purpose of this work is to study the skeleton maturation in the black popula... more ABSTRACT Purpose The purpose of this work is to study the skeleton maturation in the black population of Benin by means of Tanner Whitehouse method (TW2) in comparison with the populations of the developed countries. Material and methods The study was transversal and analytic. It included 297 boys and 303 girls aged from 9 to 18 years. This was conducted from October 2002 to May 2003 in Cotonou City, the economic capital of Benin. The corrected minimum size of the sample was 384×1.19. The sampling technique was chancy, multiphasic, stratified and in clusters. Every one of the 13 districts of Cotonou was considered as a stratum. The interpreter of the antero-posterior radiograph of the left wrist and hand was selected after an intra and extra observer test. The data treatment and analysis were performed by the logiciels Epi info and SPSS. The statistical tests used were Khi 2 test and Kappa index. Results The sample was mainly composed of pupils: 84.16% among the boys, 77.23% among the girls. 91.01% of the parents of the children had a middle standard of living. The skeleton maturation score increased with age in all TW2 methods. With the TW2 20 bone and RUS methods, the mature score was reached at percentile 50 among the boys at 18.5 years and among the girls at 17 years. It was precociously reached at percentile 97 respectively at 14 and 14.3 years among the boys and 12.7 years among the girls. With the Carpal bone method, the age of mature score at percentile 50 was 18.2 years among the boys and 17.2 years among the girls. The early maturation was obtained at percentile 97 among the boys and the girls respectively at 13.2 and 12.5 years. Discussion The skeleton maturation score of the girls in Benin is 1 to 1.5 years higher than the one of the boys. With the TW2 bone and the RUS methods, the maturation shows a delay of 0.5 to 2.5 years at the percentile 50 and of 1.5 to 2 years at the percentile 97 in relation to the Belgian, British, Chinese, Korean, Japanese, and North American standards. These delays seem to be mainly due to the less favourable socio-economic conditions in Benin. In the other hand, the more considerable delay of 1 to 4 years with the Carpal bone method remains to be elucidated. Conclusion The osseous age stemming from this work is representative of the middle social stratums of the city backgrounds. It would gain to be completed by a similar work concerning the country backgrounds of Benin.
Autosomal dominant polycystic kidney disease (ADPKD) is the most common hereditary kidney disease... more Autosomal dominant polycystic kidney disease (ADPKD) is the most common hereditary kidney disease, but poorly studied in Africa. Its frequency in the University Clinic of Nephrology and Hemodialysis of Cotonou during the ten last years was 7 cases per year with a hospital prevalence estimated at 18 per 1000. The mean age of patients was 47.2 years extending from 29 to 70 years. Males were predominant with a sex ratio of 1.13. Family history was found in 47% of patients. The most common manifestations were lumbar pain (62%), high blood pressure (59%) urinary tract infections (53%), hematuria (46%), and abdominal masses (43%). Hepatic cysts were the most extra renal manifestations, found in 34% of cases. Renal failure was observed in 72% of patients of our series, six of them were under dialysis. Direct sequencing of polycystin 1 gene enabled us to identify some new mutations: 4 nonsense mutations (p.Q2824X exon 23, p.Q1651X exon 15, p.W1666X exon 15, p.R966W exon 12), a duplication (...
Revue de laryngologie - otologie - rhinologie, 2011
Sinonasal inverted papilloma is a rare benign tumor with a high recurrence rate and potential mal... more Sinonasal inverted papilloma is a rare benign tumor with a high recurrence rate and potential malignant transformation. The purpose of this study was to analyze the clinical and radiological aspects and to identify the suitable surgical approaches to be used in developing countries. In 3 years, 7 cases have been analyzed in a retrospective study. Patients presented with unilateral nasal obstruction and epitasis, a whitish unilateral polypoid mass, sinonasal opacity with osteolysis on CT scan or on sinus X-ray. Using these data we adopted the Krouse staging which classifies the disease in four stages and accordingly the appropriate surgical approach was used. The diagnosis was confirmed by histological examination of the biopsied specimen. Average age 48.28 years, predominant sex male. Symptom: unilateral nasal obstruction 5, bilateral nasal obstruction 1, epistaxis 5. The average time-delay before consultation was 73 months. The combined endonasal endoscopic and vestibular was the m...
Revue de stomatologie et de chirurgie maxillo-faciale, 2005
Cemento-ossifying fibroma is a rare benign tumor which can affect both jaw bones, particularly th... more Cemento-ossifying fibroma is a rare benign tumor which can affect both jaw bones, particularly the mandible. We report two cases of cemento-ossifying fibroma which illustrate the radiological and anatomic features of these tumors. Differential diagnosis between cementifying fibroma and ossifying fibroma was particularly difficult. The cementifying fibroma was treated by surgical resection followed by immediate reconstruction with an iliac bone graft. The ossifying fibroma was treated by enucleation-resection. The clinical, radiological and histological features of cementifying and ossifying fibroma allow distinction. Surgical treatment is achieved by enucleation resection for small-sized ossifying fibromas and mono-bloc resection with bone reconstruction for large-sized cementifying and ossifying fibromas.
Revue de laryngologie - otologie - rhinologie, 2002
Haemorrhagic cysts of the parathyroid gland are rare. Our case report concerns a presentation wit... more Haemorrhagic cysts of the parathyroid gland are rare. Our case report concerns a presentation with a constrictive cervical haematoma, confirmed by ultrasound-guided aspiration. The haematoma, rapidly recurred, indicating exploration of the neck and haemostasis. Histological examination of excised tissue showed the haemorrhagic nature of the cyst.
ABSTRACT Background Crossed cerebellar diaschisis (CCD) has been reported on positron-emission to... more ABSTRACT Background Crossed cerebellar diaschisis (CCD) has been reported on positron-emission tomography and single-photon emission computed tomography of stroke patients. Rarely it has been described with brain diffusion-weighted MRI (DWI) of status epilepticus (SE). Methods Case report. Results A 53-year-old woman was found unresponsive after cocaine use. A diagnostic electroencephalogram was consistent with ictal SE. A brain DWI showed reduced diffusion in the left temporo-parietal and occipital cortexes, the left thalamus and the right cerebellum. The DWI changes did not correspond to a vascular territory and were attributed to seizure activity and secondary CCD. A 2-week follow-up DWI showed interval near-complete resolution of the diffusion changes. CCD in SE may represent injury caused by excessive neuronal transmission from prolonged excitatory synaptic activity via the cortico-pontine-cerebellar pathway. Alternatively, it may be a result of interruption of the cortico-pontine-cerebellar pathway with loss of cortical inhibitory input. Conclusion This case documents CCD during SE, providing further evidence of contralateral cerebellar involvement with a supratentorial epileptiform focus.
Annales françaises d'anesthèsie et de rèanimation, 2000
A 18-year-old patient injected intravenously 2.5 mL of paraffin oil into the right upper limb. It... more A 18-year-old patient injected intravenously 2.5 mL of paraffin oil into the right upper limb. It caused a local thrombophlebitis with a slow evolution. A collapsus occurred on the sixth day. The authors obtained a clinical recovery of the limb after heparine and oral anticoagulation.
Orthopaedics & traumatology, surgery & research : OTSR, 2013
Retractile fibrosis of the quadriceps (RFQ) is a physical and social handicap in children, and of... more Retractile fibrosis of the quadriceps (RFQ) is a physical and social handicap in children, and often results from a past history of quadriceps intramuscular injection. The aim of this study was to evaluate the therapeutic results of RFQ treated by distal quadricepsplasty using a modified Thompson-Payr procedure (DQPMTP). Functional recovery will be good with DQPMTP. This is a descriptive retrospective 10-year study from 2002 to 2011, including 74 children (88 knees) less than 15 years old, admitted for RFQ and treated in Benin. The types of RFQ were: knee flexion loss of motion 16 cases (18.2%), lag of extension 54 cases (61.4%) and associated genu recurvatum, 18 cases (20.5%). Wasting of the thigh was found in all cases. An associated distal femoral osteotomy was performed to correct a bone deformity in 18 cases (20.5%). There were 16 cases (18.2%) of poorly looking postoperative scars and 2 cases (2.3%) of fracture during physical therapy. Mean flexion ROM after surgery was 77.7°....
Femoral bifurcation associated with tibial aplasia of the limb is a very rare pathology. Its radi... more Femoral bifurcation associated with tibial aplasia of the limb is a very rare pathology. Its radical treatment is a disarticulation of the knee, followed by fitting of a prosthesis. In Benin the reluctance of parents to allow their children to undergo amputation and the access to equipment for the amputated child are a major technical and financial hindrance. Here we report three cases.
Morphologie : bulletin de l'Association des anatomistes, 2005
The purpose of this work is to study the skeleton maturation in the black population of Benin by ... more The purpose of this work is to study the skeleton maturation in the black population of Benin by means of Tanner Whitehouse method (TW2) in comparison with the populations of the developed countries. The study was transversal and analytic. It included 297 boys and 303 girls aged from 9 to 18 years. This was conducted from October 2002 to May 2003 in Cotonou City, the economic capital of Benin. The corrected minimum size of the sample was 384 x 1.19. The sampling technique was chancy, multiphasic, stratified and in clusters. Every one of the 13 districts of Cotonou was considered as a stratum. The interpreter of the anteroposterior radiograph of the left wrist and hand was selected after an intra and extra observer test. The data treatment and analysis were performed by the logiciels Epi info and SPSS. The statistical tests used were Khi 2 test and Kappa index. The sample was mainly composed of pupils: 84.16% among the boys, 77.23% among the girls. 91.01% of the parents of the childr...
Apert's syndrome is a type of acrocephalosyndactylia that is from part of the great group of ... more Apert's syndrome is a type of acrocephalosyndactylia that is from part of the great group of craniofacial synostoses. It is characterized by craniofacial dysmorphia and syndactylia on hands and feet, which differentiates it from Crouzon's disease. It is a rare affection that is often transmitted through an autosome dominant mode, but sporadic cases exist. We report the case of a 15-year-old girl who presented characteristic clinical signs of Apert's syndrome with normal karyotype without parental consanguinity. The Ser 252 Trp mutation of the FGFR2 gene was found, confirming the molecular diagnosis. This study illustrates the severity of ocular and neurological problems of untreated Apert's syndrome. The presence of hemoglobinopathy (Hb AS) is also a mark of its originality.
ABSTRACT Purpose The purpose of this work is to study the skeleton maturation in the black popula... more ABSTRACT Purpose The purpose of this work is to study the skeleton maturation in the black population of Benin by means of Tanner Whitehouse method (TW2) in comparison with the populations of the developed countries. Material and methods The study was transversal and analytic. It included 297 boys and 303 girls aged from 9 to 18 years. This was conducted from October 2002 to May 2003 in Cotonou City, the economic capital of Benin. The corrected minimum size of the sample was 384×1.19. The sampling technique was chancy, multiphasic, stratified and in clusters. Every one of the 13 districts of Cotonou was considered as a stratum. The interpreter of the antero-posterior radiograph of the left wrist and hand was selected after an intra and extra observer test. The data treatment and analysis were performed by the logiciels Epi info and SPSS. The statistical tests used were Khi 2 test and Kappa index. Results The sample was mainly composed of pupils: 84.16% among the boys, 77.23% among the girls. 91.01% of the parents of the children had a middle standard of living. The skeleton maturation score increased with age in all TW2 methods. With the TW2 20 bone and RUS methods, the mature score was reached at percentile 50 among the boys at 18.5 years and among the girls at 17 years. It was precociously reached at percentile 97 respectively at 14 and 14.3 years among the boys and 12.7 years among the girls. With the Carpal bone method, the age of mature score at percentile 50 was 18.2 years among the boys and 17.2 years among the girls. The early maturation was obtained at percentile 97 among the boys and the girls respectively at 13.2 and 12.5 years. Discussion The skeleton maturation score of the girls in Benin is 1 to 1.5 years higher than the one of the boys. With the TW2 bone and the RUS methods, the maturation shows a delay of 0.5 to 2.5 years at the percentile 50 and of 1.5 to 2 years at the percentile 97 in relation to the Belgian, British, Chinese, Korean, Japanese, and North American standards. These delays seem to be mainly due to the less favourable socio-economic conditions in Benin. In the other hand, the more considerable delay of 1 to 4 years with the Carpal bone method remains to be elucidated. Conclusion The osseous age stemming from this work is representative of the middle social stratums of the city backgrounds. It would gain to be completed by a similar work concerning the country backgrounds of Benin.
Autosomal dominant polycystic kidney disease (ADPKD) is the most common hereditary kidney disease... more Autosomal dominant polycystic kidney disease (ADPKD) is the most common hereditary kidney disease, but poorly studied in Africa. Its frequency in the University Clinic of Nephrology and Hemodialysis of Cotonou during the ten last years was 7 cases per year with a hospital prevalence estimated at 18 per 1000. The mean age of patients was 47.2 years extending from 29 to 70 years. Males were predominant with a sex ratio of 1.13. Family history was found in 47% of patients. The most common manifestations were lumbar pain (62%), high blood pressure (59%) urinary tract infections (53%), hematuria (46%), and abdominal masses (43%). Hepatic cysts were the most extra renal manifestations, found in 34% of cases. Renal failure was observed in 72% of patients of our series, six of them were under dialysis. Direct sequencing of polycystin 1 gene enabled us to identify some new mutations: 4 nonsense mutations (p.Q2824X exon 23, p.Q1651X exon 15, p.W1666X exon 15, p.R966W exon 12), a duplication (...
Uploads
Papers by Olivier Biaou