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Hello, everyone... The next topic is usually infrequent, and is the clinical presentation of the pathology known as "Rabdomyosarcoma" which is described as a neoplastic entity with malignant characteristics that originates from previously healthy skeletal muscle cells. Rhabdomyosarcoma is a typical childhood neoplasm that originates in embryonic mesenchymal cells that have the ability to differentiate into skeletal muscle cells, which is why they can develop in almost any type of muscle tissue and have a very variable location and clinical manifestations. This neoplasm represents the three causes of soft tissue cancer in early ages with an incidence from 5 years of life to 21, obtaining its highest peak at 15 years and these being those of gloomy prognosis. It most often affects males and whites. Although the genetic factors that predispose the appearance of this malignant pathology are not very clear, it is associated with entities such as neurofibromatosis type I, Li-Fraumeni syndrome, costello syndrome and Beckwith Wiedemann syndrome. On the other hand, environmental factors have been determined, such as exposure to ionizing radiation, chemical agents, some oncogenic viruses and the consumption of illicit substances such as cocaine and marijuana increase the risk. Medical consultation. License: CC0 Public Domain HistologyThe muscle cell or muscle fiber represents the functional and structural unit of muscle tissue. It is a specialized type that is in charge of protein synthesis in this case actin and myosin. These can be electrically and chemically stimulated, just like nerve cells. According to their function, form, disposition and structure, muscle cells are grouped into 3 categories: Smooth muscle, the cells that make it up are small and have a single nucleus specialized in continuous contractions, therefore involuntary type. Most of them are located in hollow cell walls, such as the digestive tract, urinary tract, reproductive ducts, among others. Skeletal muscle, made up of long, cylindrical cells with round and peripheral nuclei. This tissue has a striated aspect and are responsible for the movements of the skeletal system of voluntary type. Cardiac muscle, with the following characteristics; acidophilous, short, cylindrical and branched, with one or two nuclei, with the appearance of striated muscle. It is of involuntary type, they are typical of cardiac tissue (heart). Histology muscle cells. Author CNX OpenStax. Attribution 4.0 International (CC BY 4.0) AnatomyPelvisThis important portion of the human body is represented by four bones, the sacrum, the coccyx and the two iliacs. There is an imaginary line also called the terminal or unnamed line that limits the false pelvis of the true one. The false pelvis is delimited at the back by the lumbar spine and at the sides by the iliac fossa and at the front by the lower portion of the abdominal wall. While the true pelvis is below the terminal line delimited above with the promontory, the wings of the sacrum and pubis, below with the inferior narrow of the pelvis. The pelvic waist is made up of the ilium, ischium and pubis, it provides protective functions and contains viscera such as the bladder and genital organs, as well as promotes posture and movement. Fixed and configuring stability to the pelvis ligaments, sacroiliac dorsal and anterior ligament, supraspinatus ligament and tuberous sacral ligament. In relation to the muscles present in this portion of the human body are pyramidal (pyriform) internal obturator. Pelvis anatomy. Author OpenStax College. Attribution 3.0 Unported (CC BY 3.0) RhabdomyosarcomaAs already described there are 3 types of muscle cells, in the present article we will take into account the main groups, smooth muscle cells of involuntary type and striated muscle cells or voluntary musculo-skeletal type. "Rhabdomyosarcoma" originates from healthy muscle cells, which is why it can be located in any area of the body that has this type of tissue. This malignant neoplasm can develop in almost any potion of the organism, but has a predilection for certain parts:
Originally posted: https://steemit.com/steemstem/@anaestrada12/diagnostic-of-pelvic-1572312084
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