Quiste óseo unicameral de calcáneo derecho / Unicameral Bone Cysts of the Calcaneus

Introducción: El quiste óseo unicameral es una lesión pseudotumoral benigna de contenido líquido, que representa el 3 por ciento de todos los tumores primarios. El calcáneo es una localización poco frecuente y el tarso, es el hueso más afectado. Objetivo: Presentar un caso de quiste óseo unicameral del calcáneo derecho que se diagnosticó y trató en el Hospital Universitario Manuel Ascunce Domenech de Camagüey con evolución clínica favorable. Presentación del caso: Paciente masculino de 22 años, con antecedentes de salud y dolor en el calcañal derecho de dos meses de evolución, que se incrementó hasta dificultarle la marcha. A la exploración física se constató dolor a la palpación de la cara lateral del calcañal derecho, y no se recogió otro dato de interés. La tomografía axial computarizada mostró una lesión hipointensa osteolítica, amplia, con fractura anterosuperior, adelgazamiento de las corticales y con tabicado de la cámara del quiste. Se decidió tratamiento quirúrgico para excéresis y toma de muestra para biopsia, la cual reveló tejido fibroso vascularizado con osteoclastos, células gigantes multinucleadas, cristales de colesterol y hemosiderina, consistente con quiste óseo unicameral. Conclusiones: El quiste óseo unicameral es una lesión pseudotumoral benigna pero potencialmente invalidante, cuyo diagnóstico puede ser fortuito o por alguna fractura patológica. La evacuación con curetaje amplio e injerto óseo, o sus derivados, es la técnica más empleada. El paciente evolucionó de forma favorable y se clasificó como curado(AU)

Introduction: The unicameral bone cyst is a benign pseudotumoral lesion with liquid content, accounting for 3 percent of all primary tumors. The calcaneus is a rare location and the tarsus is the most affected bone. Objective: to report a case of unicameral bone cyst in a right calcaneus, which was diagnosed and treated at Manuel Ascunce Domenech Universitary Hospital in Camagüey with favorable evolution. Case report: This is the case of a 22-year-old male patient with health history of pain in his right calcaneus for two months. The pain increased and made it possible to walk. Physical examination revealed pain on palpation of the lateral aspect of the right heel, and no other data of interest was collected. A wide, hypointense osteolytic lesion was revealed by computerized axial tomography showing an anterosuperior fracture, cortical thinning, and septation of the cyst chamber. Surgery was decided for excising and biopsy sampling that revealed vascularized fibrous tissue with osteoclasts, multinucleated giant cells, cholesterol crystals and hemosiderin, consistent with a unicameral bone cyst. Conclusions: The unicameral bone cyst is a benign but potentially disabling pseudotumoral lesion. The diagnosis may be fortuitous or due to some pathological fracture. Removal with wide curettage and bone grafting, or its derivatives, is the most widely used technique. This patient evolved positively and he was classified as cured(AU)

Assessment of spontaneous resolution of idiopathic bone cavity

Abstract Idiopathic Bone Cavity (IBC) or Simple Bone Cyst (SBC) is a non- epithelialized bone cavity with serosanguinous fluid content or empty. There is a literature debate regarding its pathogenesis that remains unclear. The main treatment option is the surgical exploration, although there are successful cases described in the literature in which just a follow-up with clinical and radiographic evaluation was performed. Objective This study aimed to assess the spontaneous resolution of idiopathic bone cavity untreated by surgery. Material and Methods Twenty-one patients diagnosed with surgically untreated IBC were submitted to a follow-up protocol modified from Damante, Guerra, and Ferreira5 (2002). A clinical and radiographic evaluation was performed in 13 patients (13/21), while eight patients (8/21) were only radiographically evaluated. Three observers evaluated the panoramic radiographs of 21 patients and the Kappa test was performed by intra and inter-examiners. Inductive and descriptive statistics were applied to the results. Results Only one patient had a positive response to palpation and percussion of the teeth in the cyst area. Most of the cysts evaluated were rated as 3 (lesion "in involution"), 4 (lesion "almost completely resolved"), or 5 ("completely resolved"). Conclusions We observed progressive spontaneous resolution of IBC. Most cysts were found in the recovery process in different follow-up periods. Patient's follow-up, without surgery, may be considered after the diagnosis based on epidemiological, clinical, and radiographic features of the lesion.

Analise epidemiol¢gica do cisto ¢sseo simples por meio do tratamento conservador / Epidemiological analysis of simple bone cyst by conservative treatment

O Cisto àsseo Traum tico (COS) ‚ uma lesÆo rara, que tem alta incidˆncia na mand¡bula, principalmente na segunda d‚cada de vida. A descoberta do COS ocorre durante os exames de rotina, sendo assintom tica. A etiologia do COS geralmente encontra-se associada a algum tipo de trauma local, sem rela‡Æo causal com gˆnero ou ra‡a. O tratamento desta lesÆo ocorre na grande maioria dos relatos por meio de explora‡Æo cir£rgica, revelando-se eficaz e seguro. O objetivo deste estudo foi avaliar retrospectivamente os casos de COS, tratados entre janeiro de 1999 a julho de 2011. Foram avaliados 10.543 prontu rios, onde 12 pacientes apresentaram COS. Todos os casos ocorreram em pacientes que estavam na segunda d‚cada de vida, com m‚dia de idade de 15,2 anos. A mand¡bula estava envolvida em 100% dos casos, com elevada incidˆncia na s¡nfise (55%), seguido pelo corpo (36%) e ramo da mand¡bula (9%). Seis pacientes relataram a hist¢ria pregressa de trauma (2-9 anos) antes do diagn¢stico da lesÆo. Todos os pacientes foram submetidos … bi¢psia incisional associada … explora‡Æo cir£rgica da cavidade c¡stica, o que representou o tratamento definitivo. O tempo m‚dio de proserva‡Æo foi de 35,7 meses. No per¡odo de acompanhamento (7 a 85 meses), nÆo foi observada recidiva da lesÆo. O tratamento por meio de cirurgia explorat¢ria, realizada no momento da bi¢psia, foi eficaz em todos os casos deste estudo

The simple bone cyst (SBC) is a rare asymptomatic injury diagnosed during routine examinations. The etiology of SBC is usually associated with a local trauma, with no relation with gender or race. The treatment through surgical exploration has proved to be effective and safe. The goal of this study was to evaluate retrospectively the cases of SBC, treated between January/1999 to July/2011. The study evaluated 10.543 clinical handbooks, in which 12 patients presented SBC. In all cases patients were in the second decade of life, with mean age of 15.2 years. Mandible was involved in 100% of the cases, with high incidence on the symphisis (55%), followed by body (36%), and mandibular ramus (9%). Six patients reported trauma (2-9 years) prior to the diagnosis. All patients were submitted to an incisional biopsy associated to a surgical exploration of the cystic cavity, that represented the definitive treatment. The average time of proservation was 35.7 months. In the follow-up period (7 to 85 months) was not observed any recurrence. The treatment through exploratory surgery, carried through the moment of the biopsy, was effective in all cases

Ganglión intraarticular de tobillo / Ankle intraosseous ganglion

El ganglión intraoseo es una patología poco frecuente. Este trabajo tiene por objetivo presentar un caso con extrusión intraarticular atípica, generando un síndrome friccional anterior de tobillo y presentar su tratamiento artroscópico.

Intraosseous ganglion cysts are a rare pathology. We present a case with non-typical anterior intraarticular extrusion leading to anterior ankle impingement and its arthroscopic treatment.

Cistos ósseos simples atípicos / Atypical simple bane cysts

O cisto ósseo simples, lesão incomum dentre as patologias da cavidade oral, apresenta uma etiologia ainda inconclusiva, o que se pode constatar frente à variedade de termos que têm sido utilizados para descrever tal condição. Clinicamente, este se apresenta de forma assintomática, sendo na grande maioria dos casos, diagnosticado a partir de um achado ra- diográfico. Apresenta uma predileção pela mandíbula, em regiões dentadas, caracterizando-se radiograficamente como uma lesão unilocular sem expansão das paredes ósseas circundantes. Este artigo visa relatar dois casos clínicos de cistos ósseos simples diagnosticados como atípicos devido ao acometimento do osso mandibular em regiões edêntulas, sendo que em um dos casos apresentou expansão das paredes ósseas; aspecto que, diverge do comumente encontrado na literatura. Ambos os casos clínicos foram submetidos à curetagem e promoção do sangramento das paredes ósseas, com subseqüente formação de um coágulo sanguíneo estável. Como visto na maioria dos casos relatados na literatura, a curetagem da região acometida pelo cisto ósseo traumático apresenta-se como uma alternativa terapêutica extremamente eficaz, devendo o paciente ser periodicamente monitorado, através de exames radiográficos, ate que haja a completa formação do tecido ósseo, já que a recorrência local, apesar de raramente relatada, pode ocorrer.

The sim pie bone cyst is not an ordinary lesion among the oral cavity pathologies and still does not present a conclusive etiology. This can be very well noticed when we face the many terms that have been used to describe it. Clinically speaking, it is not presented in a symptomatic way, being diagnosed, mostly, from X-ray exams. It happens preferably in the teeth regions of the mandible, and can be identified through radiographic exams as an unilocular lesion with no expansion of the surround bone walls. This article aims to relate two clinical cases in which the simple bone cysts have been diagnosed as atypical because of the damage caused on the mandible bone at edentulous regions, considering that in one of them there has been an expansion of the bone walls. Such aspects are not in accordance with what has been described at the common literature. Both clinical cases have been submitted to a curettage proceeding, what developed the bleeding of the bone walls, with subsequent formation of a stable blood coagulum. According to the literature, in most cases, the curettage proceeding at the affected region with the traumatic bone cyst is a very effective therapeutic alternative, in which the patient should be monitored periodically, through radiographic examination, until the bone texture is completely rebuilt, since although it is rare, the local reincidence may occur.

Pathology and therapeutic results in patients with intraosseous ganglia of the carpal bone / Patología y resultados terapéuticos en los pacientes con ganglión intraóseo del hueso carpiano

This study evaluated the pathology and therapeutic results of seven patients with intraosseous ganglia of the carpal bone. The mean age at the time of surgery was 27.6 years. The lesions were localized in the proximal carpal row in six patients and in the distal carpal row in only one. Surgical treatment was performed in all patients with good bone union. None had pain during activity or at rest and no recurrence had occurred. The intraosseous ganglia in four patients was of the idiopathic type, and in the other three patients was of the penetrating type. Although intraosseous ganglia of the carpal bone is reported as a rare disease, there were 159 cases in the literature. The pathology was intra- or extraosseous development, showing variation, but most cases were localized in the proximal carpal row.

Este estudio evaluó la patología y resultados terapéuticos de siete pacientes con ganglión intraóseo del hueso carpiano. La edad promedio en el momento de la cirugía fue 27.6 años. Las lesiones se localizaban en la fila proximal del carpo en seis pacientes y en la fila distal carpiana solamente en uno. El tratamiento quirúrgico se realizó en todos los pacientes con buena unión ósea. Ninguno tuvo dolor durante la actividad o el reposo, y no había tenido lugar recurrencia alguna. El ganglión intraóseo en cuatro pacientes fue de tipo idiopático, y en los otros tres pacientes fue de tipo penetrante. Aunque el ganglión intraóseo del hueso carpiano se informa como una enfermedad rara, se reportaban 159 casos en la literatura. La patología consistía en un desarrollo intra- o extraóseo, con variación, pero la mayoría de los casos se localizaban en la fila proximal carpiana.

Benign tumors and tumor-like lesions of the calcaneum: A study of 12 cases.

Benign tumors of the calcaneum are rare. Cystic lesions such as simple bone cysts and aneurysmal bone cysts are commonly seen. Aims and Objectives: To evaluate tumors of the calcaneum, which were seen over a 12-year period. Materials and Methods: We analyzed noninfectious, noninflammatory, benign lesions of the calcaneum seen in the Orthopedic Out Patient Department from 1991 to 2003. Twelve such tumors were encountered. There were 11 males and one female and their ages varied from 18 to 53 years with a median of 31. Data was collected from the histopathology reports, radiographs, and inpatient and outpatient records. One of the coauthors reviewed the histopathologic findings of all the tumors. Results: Twelve benign lesions were seen in 12 patients. In our series, cysts predominated, with three aneurysmal bone cysts and five simple bone cysts. The other benign tumors were: one fibrous dysplasia, one vascular hamartoma, one osteoblastoma, and one chondromyxoid fibroma. The bone cysts were treated by curettage, with or without bone grafting, except for one large aneurysmal bone cyst, which was treated by excision of the calcaneum. The postoperative function in this patient was good, with modified footwear. Conclusion: The calcaneum is an uncommon site for most bone tumors, and in our series, bone cysts were the most common benign lesions. Curettage and bone grafting or the use of bone substitutes can be effectively used in the treatment of symptomatic bone cysts of the calcaneum.

Cisto ósseo aneurismático na falange proximal da mão: relato de caso e revisão de literatura / Aneurysmal bone cyst in the proximal phalange: case report and review of the literature

O cisto ósseo aneurismático é uma lesão benigna bastante comum caracterizada por ser expansiva, radioluzente, multiloculada e excêntrica, podendo acometer qualquer osso. O presente artigo relata o caso de uma criança com dor e aumento do volume no quarto dedo da mão direita há três semanas, decorrente de um cisto ósseo aneurismático. Os autores destacam as características de imagens na radiografia, tomografia computadorizada e ressonância magnética, com posteriorcorrelação cirúrgica.

Aneurysmal bone cyst is a common benign lesion characterized by its insuflative, radiolucent, excentric and multiloculated pattern. It also can occur in any kind of bone. The present article report case of a child with pain and swelling in the fourth right finger forthree weeks caused by an aneurysmal bone cyst. The authors highlightthe characteristics of images in radiography, computed tomographyand magnetic resonance imaging, with subsequent surgical correlation.

Radiological assessment of type II Stafne idiopathic bone cyst in a patient undergoing implant therapy: a case report / Evaluación radiológica del quiste óseo idiopático de stafne de tipo II en un paciente sometido a una terapia de implante reporte de un caso

This paper is intended to describe the confirmative role of radiology in the diagnosis of Stafne Idiopathic bone Cyst (SIBC) without the need for histopathology especially when dental implants are considered so as to avoid unnecessary invasive surgical exploration of this benign pathology. Other pathologies may present not unlike SIBC and as such it is mandatory to rule out such possibilities especially prior to dental implant therapy. The use of orthopanthomogram and non-sialographic computed tomography (CT) scan in the reported case together with a review of CT scan confirmatory role in the diagnosis of SIBC from the literature was the basis for this clinical report. Based on the CTscan findings of the jaw in this case and review of the literature, the implant procedure was commenced without the need of histopathology and/or for invasive surgical exploration of this pathology. All pathologic lesions of the jawbone seen on the orthopanthomogram should be confirmed prior to commencement of implant procedure even when such pathologies are seen in areas remote from the proposed implant site. The pre-implant radiological assessment utilizing non-sialographic CT scan alone is confirmatory of SIBC.

Coccidioidomicosis osteoarticular: estudio clinicopatológico de una serie de 36 pacientes mexicanos / Osteoarticular coccidioidomicosis clinical and pathological: study of 36 Mexican patients

Coccidioidomycosis (CM) is primarily a lung disease. Systemic spread occurs in 1% of cases and one of its manifestation is osteoarthritis. Aim. To describe the clinical and pathological characteristics of 36 patients with osteoarthritis by Coccidioides immitis (COA). Material and methods. The surgical pathology records of two medical institutions were reviewed; patients with clinical diagnosis of osteoarthritis and definitive histopathological diagnosis of COA were included in the study. Results were analyzed by contingence tables (RXC) and test. Results. Twenty six adults (19 men, seven women) and 10 children (seven males, three females) were studied. The analysis demonstrated a predominance of disease in men (72.2%, p - 0.008). There was no difference between males and females in relation to history of mycotic disease or diagnosis of lung disease after the diagnosis of COA. Bone involvement (76% of cases) was more frequent that pure joint lesions and the predominant radiological lesion was of lytic type. 30.5% of patients (11 cases) had multiple bone lesions and eight of them were men with multiple vertebral bone lesions. Discussion. The COA was the only manifestation of disease in 83% of the patients. Therefore is important to consider this etiology in patients of endemic area. The clinical and radiological spectrum of COA is wide and may include a dentigerous and synovial cyst or simulates metastatic disease. The recognition of the clinical manifestations of COA may contribute to an opportune diagnosis and treatment.

La coccidioidomicosis (CM) es una enfermedad primariamente pulmonar. La diseminación sistémica ocurre en 1% de los casos y una de sus manifestaciones es la osteoartritis. Objetivo. Conocer las características clínicas y patológicas de 36 pacientes con osteoartritis por Coccidioides immitis (OAC). Material y métodos. Se revisaron los archivos de patología quirúrgica de dos instituciones y se incluyeron aquellos pacientes que consultaron por enfermedad osteoarticular y cuyo diagnóstico final histopatológico fue de CM. Los resultados se analizaron con tablas de contingencia (programa RXC) y prueba de . Resultados. Se estudiaron 26 adultos (19 hombres, siete mujeres) y 10 niños (siete hombres y tres mujeres). La prueba de mostró un predominio de casos en hombres (72.2%, p = 0.008). No hubo diferencia entre hombres y mujeres en relación con antecedentes de enfermedad micótica ni en el diagnóstico de enfermedad pulmonar posterior al diagnóstico de OAM. El compromiso óseo (76% de los casos) fue más frecuente que las lesiones articulares puras y la imagen radiológica predominante fue la osteolítica. De los casos estudiados, 30.5% (11 casos) presentaban lesiones óseas múltiples. De estos 11 casos, ocho eran hombres que en su mayoría presentaban lesiones vertebrales dorsales bajas y lumbares. Discusión. En 83% de los pacientes que se presentaron por OAC, esta fue la única manifestación de la enfermedad. El espectro clínico y radiológico de OAC es muy amplio y puede presentarse como un quiste dentígero, un quiste sinovial o simular enfermedad metastásica. El reconocimiento de esta variedad de presentaciones clínicas en individuos de zonas endémicas puede contribuir a un diagnóstico oportuno y tratamiento específico.

Neoplasias en niños hospitalizados en pediatría médica: Hospital Central de San Cristóbal / Neoplasms in children hospitalized in medical pediatric: Hospital Central of San Cristobal

Se presenta la experiencia en 40 niños con cáncer ingresados al Hospital Central San Cristóbal entre junio 2004 y enero de 2005; de las historias clínicas se tomaron los datos sobre: Tipo de neoplasia, Método diagnóstico, Extensión de la enfermedad, Tratamiento, Evolución y Mortalidad. Los diagnósticos oncológicos fueron: Leucemia linfoblástica aguda (32,3 por ciento); Linfoma No Hodking (27,3 por ciento); Linfoma de Hodking y Astrocitoma (10 por ciento) cada uno; Tumor de Wilms y Retinoblastoma (7,5 por ciento); Hepatoblastoma y Meduloblastoma (2,5 por ciento). Se diagnósticaron con: Biopsia (55,0 por ciento), aspirado e inmunofenotipo de médula ósea (17,5 por ciento); sólo aspirado de médula ósea (12,3 por ciento); biopsia e inmunofenotipo y aspirado más biopsia más inmunofenotipo (7,5 por ciento). Predominó el estadio III (25 por ciento), seguido de II (12,5 por ciento), el IV (10 por ciento). Se trataron con quimioterapia (50,7 por ciento), resección quirúrgica parcial y radioterapia (17,8 por ciento). El (85 por ciento) de los casos tuvo evolución satisfactoria. Y la mortalidad afectó al (5 por ciento). En general se hizo un diagnóstico y tratamiento adecuado y oportuno evidenciado en la buena evolución de la mayoría de pacientes. Se debe fomentar la creación de unidades de atención y control del paciente oncológico infantil a fin de mantener una baja mortalidad.

Transphyseal spread of benign tumors and infections in pediatric patients: a series of six cases.

Epiphyseal extension of benign pathology is regarded as an infrequent occurrence. This observation has been attributed to anatomical and biochemical phenomenon unique to physeal cartilage. We report a retrospective series of six patients over a period of 4 years, diagnosed with benign pathologies that showed crossing of an open physeal plate by the disease. Four of these cases were infections and two were benign tumors. The patients were aged between 5 and 11 years, all of them were treated at a tertiary referral centre and followed up for a minimum period of 6 months to evaluate the progress of disease. The findings are more than just a pathological curiosity as they alter the management and surgical procedure that needs to be performed for these conditions. The recognition of the fact that benign tumors may occasionally present with transphyseal spread will prevent unjustified radical procedures that are best reserved for aggressive malignant conditions.

Free vascularized fibula graft for a cystic femoral head and neck lesion in the West Indies

A case is presented of an 18-year-old athlete with fibrous dysplasia of the femoral neck and head. The approach was by joint plastic and orthopaedic teams, which minimized operating time and allowed the option of vascular bone grafting. The lesion was curetted through a greater trochanteric window and the defect reconstructed with a free vascularized fibula graft with excellent result. Weight bearing was achieved in six months and there was minimal donor site morbidity. We believe the free vascularized fibula graft to be a reconstructive option, in difficult orthopaedic problems, facilitated by microsurgery and there is immense benefit of a joint effort between the orthopaedic and plastic surgical teams

Quiste oseo yuxtaarticular: estudio clinicopatologico / Juxta-articular bone cyst: clinical and pathologic study

El quiste oseo yuxtaarticular es una lesion quistica benigna localizada en el hueso subcondral adyacentea una articulacion, no relacionada con enfermedades articulares inflamatorias o degenerativas. Entre los años 1986 y 2000 se realizo un estudio retrospectivo de 116 pacientes con el diagnostico de dicha patologia obtenido por puncion o biopsia. Se utilizaron 2 parametros para ser evaluados: el clinicorradiologico y la investigacion anatomopatologica. Se detecto un predominio en el sexo femenino y en la cuarta decada de la vida. Las localizaciones mas frecuentes fueron las articulaciones de la cadera, la rodilla, el tobillo y la muñeca. En la mayoria de los casos los quistes fueron detectados por hallazgo. El dolor fue el sintoma predominante. La medicion quistica arrojo valores entre 1 y 2 cm.; algunos alcanzaron 4 cm. La anatomia patologica evidencio su naturaleza multiocular observandose una pared fibrosa de espesor variable con areas de degeneracion mixoide y formacion de quistes mas pequeños rodeada por escaso tejido oseo maduro escleroso. El tratamiento fue el curetaje; en los casos en que el tamaño era importante se utilizo el agregado de injerto oseo. El objetivo del presente trabajo es actualizar el tema mediante el analisis casuistico

Cisto ósseo traumático versus queratocisto odontogênico: diagnóstico diferencial em radiografia panorâmica digitalizada / Simple bone cyst versus odontogenic keratocyst: diferential diagnostic in digitalized panoramic radiographs

Este estudo analisou radiografias panorâmicas digitalizadas de 32 cistos ósseos traumáticos (COT) e 20 queratocistos (QC), selecionadas dos arquivos do Departamento de Estomatologia da Faculdade de Odontologia de Bauru, Universidade de Säo Paulo, com o objetivo de identificar características de contorno e densidade das imagens que auxiliem no diagnóstico diferencial entre estes cistos. As radiografias foram analisadas por 6 examinadores, professores de Radiologia de 3 diferentes Universidades, que classificaram os 4 segmentos (anterior, superior, posterior e inferior) dos limites das imagens das lesöes em 3 grupos: impreciso, preciso sem halo radiopaco e preciso com halo radiopaco. Eles também opinaram a respeito da presença ou ausência de "scalloping" em cada segmento dos limites áreas radiolúcidas. Realizou-se também uma análise densitométrica, onde foram obtidos valores dos tons de cinza dos pixels que formam a imagem do conteúdo dos cistos. Os resultados mostraram que: 1) o halo radiopaco é mais frequente nos QC, principalmente no segmento posterior; 2) a presença de "scalloping" é mais comum no segmento superior dos COT e 3) existe uma diferença significativa entre as densidades das imagens radiográficas destas afecçöes

Quiste hemorrágico de aspecto radiográfico tumoral: revisión de la literatura - reporte de un caso / Hemorrhagic cyst of radiographic tumoral aspect: review of the literature - report of a case

Se trata de una lesión pseudoquística encontrada por hallazgo radiográfico, mostrando una lesión radiolúcida unilocular ubicada en el cuerpo de la mandíbula entre las raíces del canino y molar inferior izquierdo, sin sintomatología, luego de realizar la biopsia de la zona y al correlacionar el aspecto clínico con el histopatológico fue compatible con el diagnóstico de quiste hemorrágico. Se presenta el caso de una paciente femenina de 15 años de edad referida para odontectomía de terceros molares retenidos. Se describe el aspecto clínico, radiográfico, quirúrgico y hallazgos patológicos. Se hace una revisión de la literatura

Aspectos clínicos, radiográficos e histopatológicos del quiste óseo solitario / Clinical, radiographics and histopatologics aspects of the solitary bony cyst

Se analizan las características clínicas radiológicas e histológicas de cinco casos de quiste óseo solitario (QOS). El rango de edad de los pacientes fue entre 12 a 20 años. Todas las lesiones fueron hallazgos radiográficos asintomáticos ubicados en la región molar-premolar mandibular. Cuatro lesiones presentaron forma de cono con la punta dirigida hacia la parte distal de la mandíbula. Además de la imagen radiográfica típica en cuatro casos se obervó erosión del hueso cortical basal. El control radiográfico en tres casos mostró reparación ósea completa después de seis meses, inflamación crónica y trabéculas óseas maduras e inmaduras. En un caso se observó un foco de lesión fibroósea benigna y médula ósea roja. Este estudio demuestra que el QOS puede corresponder a: a) lesión inflamatoria hemorrágica, b) lesión intraósea benigna y c) médula ósea roja.

Hemophilic pseudotumor of the ulna treated with low dose radiation therapy: a case report

We report a case of hemophilic pseudotumor in the ulna of a 6-year-old boy treated with radiation therapy. A total dose of 900 cGy in 6 fractions was given in 6 consecutive days. Progression of cystic changes was halted within a month. New bone formation and trabeculation were found on the 4th month. Complete healing of the lesion and bony replacement were found on the 12th month. The patient was followed up to 72 months and there was no evidence of recurrence and no bone growth disturbance. Radiation therapy can be an effective alternative modality in treating hemophilic pseudotumor.

Cisto ósseo aneurismático: apresentaçäo de um caso / Aneurysmathic bone cyst: a case presentation

Os autores apresentam um caso clínico de cisto ósseo aneurismático, discutindo sua patogênese e aspectos clínicos e microscópicos