Do arachnoid cysts grow?

Summary The volumes of intracranial arachnoit cysts were measured in 136 CT scans of 86 patients. Absolute and relative cyst size was calculated. Left hemisphere and middle cranial fossa location prevailed. A slight negative correlation of relative cyst size with age (r=–0.21, NS) disappeared when analysis was restricted to the adult age group (20 years). After the sample was divided into two groups according to relative cyst size (cysts less than mean volume vs cysts greater than mean volume), small AC showed no correlation with age, while large AC correlated positively with age (r=0.79,P<0.05). A subgroup of large AC appears to expand with time, while the majority of small AC remain unchanged.     

Primary intracranial arachnoidal cysts

Sixty-seven cases (41 males and 26 females) of arachnoidal cysts in children under 11 years are reported. About 53% of cases were diagnosed before 1 year of life. Thirty-one (42.2%) were supratentorial (interhemispheric 9, temporal fossa 10, convexity 5, sylvian fissure 3, supra- and/or retrosellar 4); 31 (46.2%) infratentorial (supra- and/or retrocerebellar 22, foramen of Magendie 3, quadrigeminal cistern 5, pontocerebellar 1); 5 (7.5%) supra-and infratentorial. Macrocephaly was the presenting symptom in 48 cases (71.5%). Associated features were frequent: cranial asymmetry in 24; aqueductal stenosis in 10; agenesis of corpus callosum in 8; deficient cerebellar lobullation in 4; Chiari I malformation in 2; neurofibromatosis type 1 with dysgenetic zones of the brain in 1; arteriovenous malformation in 1. Diagnosis was made at autopsy in six cases in the days before computed tomography and magnetic resonance: three patients had a cyst in the supra-and retrocerebellar midline; two had a cyst in the quadrigeminal cistern and the sixth was a rare case with the cyst passing from the posterior fossa to the left lateral ventricle through a hole in the basal surface of the brain. Small and some middle-sized cysts were not treated. Big and some middle-sized cysts were usually treated by cysto- and/or ventriculoperitoneal shunts. Arachnoidal cysts of the quadrigeminal cistern usually present with aqueductal stenosis and have to be treated with ventriculoperitoneal shunt. Craniotomy and fenestration of the cysts were performed in some cases with good results. The average mental level of these children is usually moderately low.     

Foetal cystic abdominal masses

Foetal abdominal cysts are frequently found on routine antenatal ultrasound. Various sonographic features might help in their differential diagnosis. However, a definitive diagnosis is often not made until postnatal life, and detection of an intra‐abdominal cyst antenatally rarely alters obstetric management. A review of possible causes of a foetal abdominal cyst is presented.     

DIAGNOSIS AND TREATMENT OF MEDIASTINAL ENTEROGENOUS CYSTS IN CHILDREN

MEDIASTINAL enterogenous cysts are congen-ital anomalies rarely seen in the pediatric agegroups.Most children are first admitted tohospital due to respiratory symptoms.Neonates and littleinfants often have the symptom of respiratory distress,while a few a…     

关节镜治疗半月板囊肿

目的介绍半月板囊肿的发病情况、临床表现、诊断及关节镜治疗方法。方法6例患者均使用关节镜进行探查和治疗，囊肿行刨吸，半月板酌情行全切、次全切或半月板修复术。结果6例患者随访3～14个月，均无膝关节不适主诉。结论半月板囊肿是一种少见的膝关节疾息，MRI检查是诊断的主要依据，关节镜治疗是较好的治疗方法。     

自行消失的卵巢非赘生性囊肿超声表现分析

目的 分析能够自行消失的卵巢非赘生性囊肿的超声表现。方法 对超声提示为卵巢囊肿的病例进行超声复查随访，分类分析能够自行消失的囊肿的声像图表现。结果 能够自行消失的卵巢非赘生性囊肿囊内回声可为无回声、丝网状回声、类实性回声、有一条状分隔回声、有一子囊回声、云雾状回声、斑片状高回声以及有乳头状回声等；囊肿平均直径约3．7cm，平均持续时间约25天。结论 卵巢非赘生性囊肿超声表现多样，坚持定期随访不少于3个月，能提高确诊率。     

Stafne bone defect in the anterior mandible

Lingual mandibular bone defect, also known as Stafne bone cavity, is mostly seen in the posterior portion of the mandible. Cavities in the anterior region are very unusual, with around 50 cases reported in the English literature. They are often asymptomatic and found during routine radiographic examinations. This article describes a case of anterior Stafne bone cavity in a 56-year-old male patient.     

Favre–Racouchot syndrome concurrent with chronic granulomatous reaction

Favre–Racouchot syndrome (FRS) is a disorder consisting of solar elastosis with the presence of multiple cysts and open comedones. Although the exact mechanism of the condition is not known, FRS has been specifically connected to sun exposure, smoking and radiation exposure. The histological changes present in FRS reveal an atrophic epidermis and large masses of keratinous material, causing follicular plugging, as well as solar elastotic changes and possible basophilic degeneration of connective tissue. Herein, we report an unusual case of FRS concurrent with chronic granulomatous reaction and review relevant published works.