Lungs Disease Biography
(Source google.com)
Respiratory disease is a medical
term that encompasses pathological conditions affecting the organs and tissues
that make gas exchange possible in higher organisms, and includes conditions of
the upper respiratory tract, trachea, bronchi, bronchioles, alveoli,pleura and
pleural cavity, and the nerves and muscles of breathing. Respiratory diseases
range from mild and self-limiting, such as the common cold, to life-threatening
entities likebacterial pneumonia, pulmonary embolism, and lung cancer. The study of respiratory disease
is known as pulmonology. A doctor who specializes in respiratory disease is
known as a pulmonologist, a chest medicine specialist, a respiratory medicine
specialist, a respirologist or a thoracic medicine specialist. Chronic
obstructive pulmonary disease (COPD), which includes emphysema, is an example
of an obstructive lung disease where the alveolae rupture, thus causing air to
be retained in the lungs and hence limiting the available space during
inhalation. Asthma is an example of an
obstructive lung disease (and of an inflammatory lung disease). It is a disease
in which muscles of bronchi contract, making it difficult for air to reach the
lungs. One treatment of asthma is to use an inhaler which contains a drug to relax
muscles of bronchi. Asthma is a difficulty in breathing causing wheezing due to
inflammation of bronchi and bronchioles, this causes a restriction in the
airflow into the alveoli. Asthma attacks can be brought on by triggers, such as
air pollution, tobacco smoke, factory fumes, cleaning solvents, infections,
pollens, dust, foods, cold air, exercise, chemicals and medications. Triggers
are highly individual and may not be related to allergens. Many asthmatics are
not allergic to common allergens such as mold.
The most common lower respiratory
tract infection is pneumonia, an infection of the lungs which is usually caused
by bacteria, particularly Streptococcus pneumoniae in Western countries.
Worldwide, tuberculosis is an important cause of pneumonia. Other pathogens
such as viruses and fungi can cause pneumonia for example severe acute
respiratory syndrome and pneumocystis pneumonia. A pneumonia may develop
complications such as a lung abscess, a round cavity in the lung caused by the
infection, or may spread to the pleural cavity. In addition, since many cancers
spread via the bloodstream and the entire cardiac output passes through the
lungs, it is common for cancer metastases to occur within the lung. Breast
cancer may invade directly through local spread, and through lymph node metastases.
After metastasis to the liver, colon cancer frequently metastasizes to the
lung. Prostate cancer, germ cell cancer and renal cell carcinoma may also
metastasize to the lung.
Treatment of respiratory system
cancer depends on the type of cancer. Surgical removal of part of a lung
(lobectomy, segmentectomy, or wedge resection) or of an entire lung
pneumonectomy), along with chemotherapy and radiotherapy, are all used. The
chance of surviving lung cancer depends on the cancer stage at the time the cancer
is diagnosed, and to some extent on the histology, and is only about 14-17%
overall. In the case of metastases to the lung, treatment can occasionally be
curative but only in certain, rare circumstances.family: sans-serif; font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 19.200000762939453px; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); display: inline !important; float: none;">. A pneumonia may develop complications such as a lung abscess, a round cavity in the lung caused by the infection, or may spread to the pleural cavity.
No comments:
Post a Comment