ABSTRACT
Una contusión tangencial sobre determinadas regiones del cuerpo puede provocar una colección subcutánea serosa límpida o translúcida que aparece súbita o lentamente, conocida como hematoma disecante de Morel-Lavallée. La localización en la cadera es muy frecuente, pero es infrecuente en la rodilla. A la lesión de Morel-Lavallée también se la llama seudoquiste, quiste postraumático de tejidos blandos o extravasación de Morel-Lavallée. Presentamos a un paciente de 49 años, con una lesión traumática y un hematoma seroso de Morel-Lavallée que se produce por la fricción entre el tejido celular subcutáneo y la fascia durante la lesión traumática. Dada su localización infrecuente, se decidió comunicar este caso, ya que se han publicado solo un par de pacientes con este cuadro. Nivel de Evidencia: IV
A tangential contusion on certain regions of the body can lead to a clear or translucent serous subcutaneous collection that appears suddenly or slowly, known as Morel-Lavallée dissecting hematoma. It is frequently located in the hip and infrequently in the knee. The Morel-Lavallée lesion can be called pseudocyst, soft tissue posttraumatic cyst, or Morel-Lavallée extravasation. We present the case of a 49-year-old patient with a serous Morel-Lavallée lesion, caused by friction between the subcutaneous cellular tissue and the fascia during a traumatic injury. Given its infrequent location, it was decided to report this case, since few cases of patients with this condition have been published in the literature. Level of Evidence: IV
Subject(s)
Middle Aged , Soft Tissue Injuries , Seroma , Knee InjuriesABSTRACT
Although the sural nerve is the most extensively studied nerve in man, there is a dearth of data regarding the normal variations in the size-frequency distribution of axons in normal subjects; criteria for assessing the normality of a given individual are not available. Therefore, in everyday practice, the surgical pathologist may meet with difficulty in interpretit the biopsy of one particular individual, in whom the distribution is slightly different from the curves published. The object of this work is to detect the normal limits of variation in the distribution of diameters of muelinated and unmyelinated fibers in normal subjects and to establish the criteria that permit the calculated curves to be used in veryday clinical practice. Normal sural nerves of 19 patients were analyzed. Ages ranged between 18 months and 55 years. Morphometric analysis was performed with the Histoscan X automatic image processing analyzer, and , for statistical analysis, mixtures of lognormal distributions were fitted and tested with Pearson's statistics. Nerves of three diabetic patients were used for testing the method. They were clearly classified as abnormal. The curves, therefore, have been proven useful for everyday surgical pathology practice