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Penyakit Tiroid

Thyroid diseases are categorized into two main groups: those which are caused by irregular thyroid function (hyperthyroidism and hypothyroidism), and those known as nodular thyroid diseases.

Hypothyroidism

Warning signs of hypothyroidism

  • Enlargement of the thyroid
  • Swelling in the face, arms, or legs
  • High diastolic blood pressure (pressure in the arteries between beats)


Symptoms

  • Severe exhaustion
  • Tiredness
  • Sluggishness and drowsiness
  • Issues affecting speech and thought
  • Impaired memory function
  • Irregular weight gain
  • Heightened sensitivity to cool environments
  • Muscular aches and pains, and frequent muscle cramps
  • Dry skin and fragility of the hair and nails
  • Swelling in the face and under the eyes
  • Irregularities affecting the menstrual period or its frequency
  • Ovulation issues, difficulties conceiving, and increased miscarriage risk
  • Hyperlipidemia
  • A review of the patient’s medical history and a physical assessment
  • Blood tests to analyze TSH, free T3, and free T4 hormone levels, which take around 2 hours to complete
  • Blood tests for thyroid antibodies, which is assessed through analysis of Anti-TPO (anti-thyroid peroxidase) and Anti-Tg (anti-thyroglobulin antibodies) levels and takes around 2 hours to complete
  • An ultrasound scan in cases where the thyroid has grown in size
Levothyroxine medication is used to replace the thyroid hormones that the body is no longer able to produce in sufficient quantities.


Treatment results
Hypothyroidism is a chronic condition, so patients will require continuous medication for the duration of their lives. However, once thyroid hormone levels return to normal, the associated symptoms will go away.

Hypothyroidism

If left untreated or in severe cases, hypothyroidism can result in the patient going into what is known as a “myxedema coma”, which is characterized by the failure of various physical systems, including:

  • The neurological system, which can lead to confusion, sluggishness, loss of consciousness, seizures, or a coma
  • The respiratory system, which can slow breathing down, causing an oxygen deficiency, fluid buildup in the lungs, and respiratory failure
  • The renal system, which can cause kidney failure
  • The cardiovascular system, which can cause a drop in blood pressure, severely reduced pulse, irregularities in the heart’s electrical system, and a buildup of pericardial fluid
  • Hypoglycemia
  • The digestive system, which can cause severe constipation and impaired intestinal function
Death rates resulting from such an occurrence are between 30 – 50%, with elderly patients and those with underlying health conditions most at risk.

Warning signs of hyperthyroidism

  • Protrusion of the eyeball
  • Other eye problems, such as redness, dryness, or swelling eyelids
  • Some cases may involve blurred vision
  • An enlarged thyroid gland
  • An irregular or unusually fast heart rate
  • Smoothing of the skin
  • An increased risk of osteoporosis


Symptoms

  • A rapid heart rate that causes fatigue and shallow breathing
  • Irritability, nervousness and anxiety
  • Weight loss
  • Muscle weakness and shaking hands
  • Hair loss
  • Frequent bowel movement
  • Irregularities affecting the menstrual period
  • Sensitivity to heat
  • An increased risk of miscarriages
  • Difficulty sleeping
  • Blood tests to analyze TSH, free T3, and free T4 hormone levels
  • Blood tests to ascertain thyroid antibody strength, assessed through analysis of Anti-TPO (anti-thyroid peroxidase), Anti-Tg (anti-thyroglobulin antibodies), and TSH receptor antibody (TRAb) levels, which are the antibodies responsible for impairing thyroid function
  • For cases suspected of suffering thyroiditis, physician may order radioactive iodine uptake (RAIU) to distinguish thyroiditis from hyperthyroidism.
  • Patients who have hyperthyroidism and palpable thyroid nodule(s), physician may order the following tests:
    • A thyroid scintigraphy (thyroid scan) to assess for possible hyper functioning thyroid nodule(s)
    • Thyroid ultrasound

There are 3 main treatment options that can be used to treat hyperthyroidism, as follows:

  • Anti-thyroid medicines, which are methimazole and propylthiouracil (PTU)
  • Radioactive iodine therapy  (I-131)
  • Thyroidectomy or surgical removal of thyroid gland, which can be performed using either of the following techniques:
    • Open surgery
    • Endoscopic surgery
  • Patients with severe thyroid eye disease (proptosis, strabismus, or blurred vision owing to hyperthyroidism) will require ophthalmology consultation. The ophthalmologist may perform one or all of the following surgeries:
    • Orbital decompression to prevent blindness resulting from elevated intraocular pressure
    • Eye muscle surgery to correct strabismus
    • Eyelid surgery used to treat external eye issues or eyelid disorders involving bulging to return the eyeball and eyelid to their former positions

Generally, medical staff will first try medication, but should the patient’s condition not show signs of improvement or the disease persists or reoccurs after antithyroid medicine discontinuation, radioactive iodine therapy or surgery may be required. Surgery, also, may be necessary in cases suspected of suffering with thyroid cancer or suspicious thyroid nodule alongside hyperthyroidism.


Treatment results

  • The condition may improve significantly, but there is usually a need for continuous medication lasting approximately 1 ½ to 2 years. Around 30–40% of patients experience hyperthyroidism recurrence, especially those with severely elevated thyroid hormone at the diagnosis, large goiter or smoking
  • If radioactive iodine therapy treatment is used, the thyroid gland size will decrease due to the treatment helping to destroy the overactive thyroid glands and restoring normal thyroid function. However, patients may experience permanently impaired thyroid function, which requires lifelong thyroid hormone replacement.
  • Patients undergoing surgical forms of treatment will also likely need to take thyroxine medication for the rest of their lives.
Hyperthyroidism

Thyroid storm – which is severe life-threatening hyperthyroidism can cause any of the following symptoms: the failure of various organs systems, fever, an elevated heart rate, an irregular heart rate, heart failure, anxiety, confusion, coma, jaundice, or hepatomegaly. Death rates resulting from this condition reach approximately 20–30%.

Symptoms

People suffering with nodular thyroid diseases tend not to experience any symptoms, although some may experience the following:
  • A noticeable enlargement of the thyroid gland
  • A raspy voice and difficulties swallowing, which may happen if the nodule is cancerous and has involved the nearby nerve supplying the voice box or invaded the esophagus
  • A tightness in the throat
  • Symptoms synonymous with hypothyroidism or hyperthyroidism
  • A thyroid ultrasound
  • Thyroid scintigraphy (thyroid scan) for patients who with low TSH (Thyroid Stimulating Hormone) and thyroid nodule(s)
  • Fine needle aspiration (FNA) in cases where an ultrasound shows a nodule that is suspicious for cancer. The procedure begins with a local anesthetic injections into the skin before an ultrasound is performed to help doctors accurately locate the nodule. This generally takes no longer than 30 minutes to complete and involves no scarring, with patients able to return home straight away. Pathologists are then responsible for interpreting the results for the patients after careful inspection of the cells, which takes approximately 2–3 days in most cases.
  • A cervical lymph node mapping ultrasound is a highly detailed ultrasound to examine lymph nodes in the patient’s neck. It is usually ordered by the doctor when the nodule is highly suspicious and confirmed to be cancerous.
  • CT scans or MRI scans may be necessary in patients with large nodules that doctor’s suspect could be pressure effect, compress or invade nearby organs (i.e. trachea or esophagus).
  • A thyroidectomy (partial or total removal of thyroid gland) using either of the following techniques:
    • Open surgery
    • Endoscopic surgery using either a trans-axillary thyroidectomy or trans-oral endoscopic thyroidectomy procedure
  • Typically surgery is recommended when the thyroid nodule is very suspicious or confirmed by FNA to be cancerous, or it causes compression symptoms to the patient (for example, difficulty breathing or swallowing). If the nodule is not cancerous but causes symptoms and patients wants to avoid surgery, the following options are available
    • Thyroid radiofrequency ablation (RFA) is a minimally invasive form of treatment that utilizes high frequency sound waves to reduce the nodule’s size. It involves inserting electrodes into the skin to the depth of the nodule before releasing sound waves through those electrodes, causing heat that helps to reduce the nodule’s size.
    • A high-intensity focused ultrasound (HIFU). This is a non-invasive procedure that utilizes sound waves at 0.8 3.5 MHz instead of using needles. The procedure involves placing a probe that emits the sound waves against the skin to cause vibrations and heat in the nodule tissue, which can be effective in reducing its size.
    • Ethanol ablation involves injecting ethyl alcohol into the nodule to reduce its size. This procedure is most suited to predominantly cystic thyroid nodule cases.


There are 3 main benefits to such forms of treatment, as follows:

  • There is no need for general anesthesia as local anesthetic is sufficient.
  • These are non-surgical techniques, so there is no scarring or need to stay overnight in hospital.
  • These procedures eliminate the need for a thyroidectomy, which removes the risk of thyroid hormone deficiencies occurring following treatment.
Nodular thyroid diseases

Generally, thyroid cancer is found in about 5-10 % of thyroid nodules. If it is left untreated thyroid cancer could spread to nearby organs, such as the trachea, larynx, and esophagus. Cancer can cause any of the following issues: difficulties or pain when swallowing, increased choke risk, breathing difficulties, or a raspy voice. Nonetheless, the cancer could also spread to lymph nodes located in the neck, with some cases spread to blood stream to lung and bone.
Last modify: Mei 08, 2023

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