Enamel pearl is an ectopic enamel, which usually occurs in the root bifurcate or approaching enamel-cementum site of the first maxillary molar. A case of multiple enamel pearls on the left maxillary third molar is reported in this paper, and relevant literature was reviewed.
Dental Cementum ; Dental Enamel ; abnormalities ; Humans ; Molar ; Molar, Third ; Tooth Root

Objective:To study the clinical effect of corticosteroids (C S) with small dosage in the recurrence control of pemphigus. Methods: 25 cases of pemphigus were diagnosed by clinical and pathological examinati on.They were treated with CS at 60-80 mg/d in acute stage for symptom control.Th en,the dosage of CS was decreased by 5 mg in each following 2 weeks untill it re ached 2.5 mg/2 d. The treatment of 2.5 mg/2 d was continued for 1 year and was a ssisted with tripterygium polyglycoside, compound thalidomide, compound cyclopho sphamide (compounded with total saponins of ginseng), dapsone, and/or some kidne y-supplementing herbs. The patients were followed-up for 9~16 years.Re sults:No recurrence was observed in 16 cases(64%).Recurrence was found i n 9 cases(36%),among them 7(28%) were with light symptom and 2(8%) severe. Sever e side-effect was not found in all cases. Conclusion:The recurr ence of pemphigus may be controlled without severe side-effect by long-term us e of small dosage of CS assisted with proper immuno-inhibitors, immuno-regulat ors and/or some kidney-supplementing herbs.

The currently used heart valve prosthesis are still far from the ideal one in anticoagulation and longevity. The construction of tissue engineering heart valve leaflets are carried out recently. This article reviews the progress of tissue engineering heart valve leaflets in implanting materials, seeded cells, animal experiment and basic research. It also discusses the benefits and feasibility of tissue engineering heart valve leaflets.

Forms and Records Control ; methods ; Humans ; Pathology, Clinical ; methods

Objective To compare the biomechanical properties between the two-level fixation by im- plantation of pedicle-screws into the adjacent upper and lower vertebrae of the fractured vertebra and the three-level fixation by implantation of pedicle screws into the fractured vertebra and its adjacent upper and lower vertebrae in the treatment of thoracolumbar burst fractures.Methods Eight fresh frozen calf spines were used in this study.Each specimen was tested in four models:intact model as the control,L1 burst fracture model,two-level fixation model, and three-level fixation model.The L1 burst fracture model was created on a biaxial material testing machine (MTS858 Bionix test system,America).During the experiment,the flexion,extension,bilateral bending and axial rotation loadings were applied to the specimens and the range of motion(ROM)was measured with a three-dimensional laser analysis apparatus and the stiffness was calculated subsequently.One-way statistical analysis was used.Results The ROMs under six different loadings in the fracture model became larger obviously(P＜0.05)and the stiffness decreased(P＜0.05).The ROMs in both fixation models were smaller than those in the other models(P＜0.01)and the stiffness increased distinctly(P＜0.05).There were no significant differences in ROMs and stiffness between the two-level fixation and three-level fixation models(P＞0.05).Conclusion Two-level fixation provides similar biomechanical stability as three-level fixation does in the reconstruction of unstable thoracolumbar fractures.

Acupuncture Points ; Acupuncture Therapy ; Adult ; Female ; Fingers ; Humans ; Male ; Middle Aged ; Neuralgia ; therapy ; Young Adult

Humans ; Interferons ; administration & dosage ; therapeutic use ; Lymphoma, Mantle-Cell ; drug therapy ; Male ; Middle Aged ; Thalidomide ; administration & dosage ; therapeutic use

Adult ; Chondroma ; pathology ; Ear Auricle ; pathology ; Ear Neoplasms ; pathology ; Humans ; Lipoma ; pathology ; Male

Objective To evaluate the method and outcome of surgical treatment for refractory slow-transit constipation (STC). Methods Clinicopathologic data of 24 patients with severe STC which underwent (colectomy) in recent years were retrospectively analyzed. Results 18 of the patients underwent pancolectomy,and 6 underwent subtotal colectomy. All of the 14 STC patients complicated with outlet obstructive (constipation)(OOC) were corrected preoperatively by related surgery. The curative rate of surgical (treatment) was 95.8%,with an average of(3?1.9) times of bowel motion per day. The incidence of (abdominal) distention decreased from 75% to 12.5%. One patient who underwent ileorectal anastomosis (developed) recurrent constipation. Conclusions Colectomy produces satisfactory results in the majority of (patients) with refractory slow-transit constipation.Patients complicated with OOC should undergo energetic (preoperative) correction therapy,in order to ensure a satisfactory surgical outcome.

SUMMARY We analyzed the clinicopathological characteristics of one patient with Rhupus syndrome as-sociated nephropathy in Peking University People ’s Hospital, and reviewed the related literature .The pa-tient was a middle aged female .She developed rheumatoid arthritis first , and then manifested mild sys-temic lupus erythematosus together with positive anti-neutrophil cytoplasmic antibodies ( ANCA ) and cryoglobulinemia several years later .The renal biopsy was performed and manifested as lupus nephritis . The transmission electron microscopy revealed cryoglobulinemia associated renal damage .This report shows that the clinicopathological characteristics in patients with Rhupus syndrome associated nephropathy are complicated .The renal pathology can be used as a diagnostic tool .