Question: How many cases of thyroid cancer were reported in 2005?
About the article "Chernobyl disaster", section "Thyroid cancer".

Candidate passages:
The 2005 Chernobyl Forum report revealed thyroid cancer among children to be one of the main health impacts from the Chernobyl accident.
In that publication more than 4000 cases were reported, and that there was no evidence of an increase in solid cancers or leukemia.
It said that there was an increase in psychological problems among the affected population.
Dr Michael Repacholi, manager of WHO's Radiation Program reported that the 4000 cases of thyroid cancer resulted in nine deaths.
According to UNSCEAR, up to the year 2005, an excess of over 6000 cases of thyroid cancer have been reported.
That is, over the estimated pre-accident baseline thyroid cancer rate, more than 6000 casual cases of thyroid cancer have been reported in children and adolescents exposed at the time of the accident, a number that is expected to increase.
They concluded that there is no other evidence of major health impacts from the radiation exposure.
Well-differentiated thyroid cancers are generally treatable, and when treated the five-year survival rate of thyroid cancer is 96%, and 92% after 30 years.
UNSCEAR had reported 15 deaths from thyroid cancer in 2011.
The International Atomic Energy Agency (IAEA) also states that there has been no increase in the rate of birth defects or abnormalities, or solid cancers (such as lung cancer) corroborating UNSCEAR's assessments.
UNSCEAR does raise the possibility of long term genetic defects, pointing to a doubling of radiation-induced minisatellite mutations among children born in 1994.
However, the risk of thyroid cancer associated with the Chernobyl accident is still high according to published studies.
The German affiliate of the International Physicians for the Prevention of Nuclear War (IPPNW) argued that more than 10,000 people are today affected by thyroid cancer and 50,000 cases are expected in the future.
Thyroid cancers can be classified according to their histopathological characteristics.
The following variants can be distinguished (distribution over various subtypes may show regional variation):  Papillary thyroid cancer (75% to 85% of cases ) – often in young females – excellent prognosis.
May occur in women with familial adenomatous polyposis and in patients with Cowden syndrome.
Follicular thyroid cancer (10% to 20% of cases ); occasionally seen in patients with Cowden syndrome  Medullary thyroid cancer (5% to 8% of cases)- cancer of the parafollicular cells, often part of multiple endocrine neoplasia type 2.
Poorly differentiated thyroid cancer  Anaplastic thyroid cancer (Less than 5%).
It is not responsive to treatment and can cause pressure symptoms.
Others * Thyroid lymphoma * Squamous cell thyroid carcinoma * Sarcoma of thyroid The follicular and papillary types together can be classified as "differentiated thyroid cancer".
These types have a more favorable prognosis than the medullary and undifferentiated types.
Papillary microcarcinoma is a subset of papillary thyroid cancer defined as measuring less than or equal to 1 cm.
The highest incidence of papillary thyroid microcarcinoma in autopsy series was reported by Harach et al.
in 1985, who found 36 of 101 consecutive autopsies were found to have an incidental microcarcinoma.
Michael Pakdaman et al.
report the highest incidence in a retrospective surgical series at 49.9% of 860 cases.
Management strategies for incidental papillary microcarcinoma on ultrasound (and confirmed on FNAB) range from total thyroidectomy with radioactive iodine ablation to observation alone.
Harach et al.
suggest using the term "occult papillary tumor" to avoid giving patients distress over having cancer.
It was Woolner et al.
who first arbitrarily coined the term "occult papillary carcinoma" in 1960, to describe papillary carcinomas ≤ 1.5 cm in diameter.  
Papillary thyroid cancer or papillary thyroid carcinoma is the most common type of thyroid cancer, representing 75 percent to 85 percent of all thyroid cancer cases.
It occurs more frequently in women and presents in the 20–55 year age group.
It is also the predominant cancer type in children with thyroid cancer, and in patients with thyroid cancer who have had previous radiation to the head and neck. 
Thyroid cancer is a malignant neoplasm originating from follicular or parafollicular thyroid cells.
The most effective management of aggressive thyroid cancers is surgical removal of thyroid gland (thyroidectomy) followed by radioactive iodine ablation and TSH-suppression therapy.
Chemotherapy or radiotherapy may also be used in cases of distant metastases or advanced cancer stage. 
The TORCH 2006 report "estimated that more than half the iodine-131 from Chernobyl increases the risk of thyroid cancer was deposited outside the former Soviet Union.
Possible increases in thyroid cancer have been reported in the Czech Republic and the UK, but more research is needed to evaluate thyroid cancer incidences in Western Europe".
It predicted about 30,000 to 60,000 excess cancer deaths and warned that predictions of excess cancer deaths strongly depend on the risk factor used; and predicted excess cases of thyroid cancer range between 18,000 and 66,000 in Belarus alone depending on the risk projection model