Biomechanical and histological comparison of two suture configurations for soft tissue grafts: speedtrap™ versus krackow stitch.

To compare 2 different graft preparation techniques to determine biomechanical strength and resultant tissue trauma evaluated by histology. Twelve common flexors of the finger's tendons were prepared with either tubulization (SpeedTrap™) or transtendon stiches (Orthocord™). The stiffness, resistance and energy at maximum load were tested for biomechanical assessment in both groups.

Dedifferentiated giant-cell tumor of bone with an undifferentiated round cell mesenchymal component.

The dedifferentiated giant-cell tumor of the bone is a very rare variant of the giant-cell tumor (GCT). We report the clinical, radiographic and histological findings of a dedifferentiated GCT in which the dedifferentiated component consisted of small round cells. We also comment on previously reported cases of dedifferentiated GCT, discuss the clinical implications of this dual histology, and analyze the information published about the coexistence of similar genetic abnormalities in GCT and small round cell tumors of the bone.

[Bone tumor frequency in adults and elderly].

Introduction: We consider of great importance knowing the types of bone tumors and tumor-like lesions in adults and the elderly, which are increasing in proportion in our country.

Objectives: (1) To analyze the frequency of bone tumors and tumor-like lesions in adults and elderly; (2) to determine any difference between these two groups; (3) and to analyze the most frequent sites of involvement.

Material And Methods: We conducted a cross-sectional descriptive study that consisted in a retrolective review of all cases classified as a bone tumor or a tumorlike condition from year 2000-2006.

Accuracy of intraoperative consultation for bone tumors: experience in an orthopedic hospital.

Background: Intraoperative consultation is an integral part of surgical pathology. However, there are few reports concerning intraoperative pathology consultation exclusively for bone tumors.

Method: Our hospital is an orthopedic institution that specializes in the diagnosis and treatment of bone tumors, and we retrospectively reviewed the intraoperative consultations for bone tumors on our service from January 2002 to February 2006.

[Obesity and steatohepatitis. Histologic aspects].

The traditional concept of adipose tissue as a passive reservoir for energy storage is no longer valid because it has been demonstrated that adipose tissue is a complex, essential, and highly active metabolic and endocrine organ that not only responds to afferent signals from traditional hormone systems and the central nervous system (CNS), but also expresses and secretes factors with important endocrine functions. These factors include leptin and other cytokines. Adipose tissue is also a major site for metabolism of sex steroids and glucocorticoids.

Fine needle aspiration cytology of low grade fibromyxoid sarcoma. Report of a case with histologic correlation.

Background: Low grade fibromyxoid sarcoma, first described in 1987, is a rare sarcoma characterized by a bland and deceptively benign histologic appearance but with aggressive behavior.

Case: A 51-year-old female presented with a history of a recurrent and slowly growing mass in the left foot. Fine needle aspiration biopsy showed an abundant myxoid background with occasional thick bands of collagen.