6.  The applicant was born in 1954 and until his arrest lived in St Petersburg. He is currently serving his sentence in a correctional colony in the Arkhangelsk Region. 7.   The applicant was arrested on 31 July 2010 on suspicion of aggravated kidnapping, extortion and conspiracy. He remained in detention throughout the investigation and trial. 8.  On 22 June 2012 the Leningrad Regional Court found the applicant guilty as charged and sentenced him to nine years’ imprisonment in a high‑security correctional colony with the release to be followed by a year‑long restriction of liberty. 9.  On 8 November 2012 the Supreme Court of Russia upheld the conviction on appeal. 10.  The parties provided the Court with the applicant’s medical documents, including his clinical records, discharge summaries, and expert opinions. 11.  The medical records show that the applicant had a long history of cerebral diseases as a result of having sustained a head injury in 1997 that developed into traumatic cystic arachnoiditis. Two years later he underwent a tomography examination which confirmed the presence of a growing liquor cyst located in the right frontotemporal part of the brain. The cyst impacted on his acoustic and visual nerves. The examination also revealed moderate internal hydrocephalus. In the recommendations written on 11 May 2000, the applicant’s doctor noted that a nuclear magnetic resonance examination, an electroencephalography examination and a liquor analysis were required to properly diagnose the applicant’s condition. He further observed that, in the absence of any treatment, it would be reasonable to perform urgent cerebral bypass surgery in order to prevent the applicant from going irreversibly blind. Nothing in the medical documents submitted suggests that the applicant had had any recourse to specific medical assistance or examinations regarding his cerebral problems during the ten years preceding his arrest. 12.  After the arrest the applicant was taken to temporary detention facility no. IZ-47/1 in St Petersburg (“facility no. IZ-47/1”). On admission to that facility the resident prison doctor performed a general medical check-up of the applicant, having noted in the medical file that he had a brain cyst. The doctor concluded that the applicant was “somatically healthy” and was therefore fit to remain in the conditions provided by the detention facility. 13.  On 23 September and 26 October 2010 the applicant was seen by a neurologist. In the absence of any medical documents the prison doctor was only able to perform a visual examination of the applicant. He diagnosed the applicant with hydrocephalus and recommended that an X-ray examination of the skull be carried out to make the correct diagnosis. 14.  In January 2011 the applicant’s medical file was supplemented with his old clinical records from a civilian hospital and the prison doctor examined him anew, paying regard to the additional medical information. He confirmed the diagnosis made in 2000 and recommended a consultation with an ophthalmologist. The applicant was prescribed drug therapy for a month. 15.  An ophthalmologist diagnosed the applicant with angiopathy. 16.  In February 2011 the applicant was diagnosed with tuberculosis. He was immediately transferred to prison hospital no. 2 in St Petersburg, where the disease was successfully treated. The applicant was discharged from hospital with the doctors’ attestation of his full recovery from the infection. 17.  On 8 April 2011 the applicant was sent to Gaaza prison hospital in St Petersburg for an in-depth medical examination. He underwent a large variety of diagnostic procedures, including a magnetic resonance tomography of the brain and cervical vertebrae performed in a Russian civilian hospital, the Mariinskiy Hospital of St Petersburg. The tests showed that the applicant had a liquor cyst in the right frontotemporal part of the brain and that he suffered from vicarious hydrocephalus of mixed genesis and encephalopathy at the initial stage. In addition, doctors were able to establish that the applicant’s cervical vertebrae had several herniated disks and perineural cysts. 18.  Following completion of the diagnostic cycle, the applicant was released from the hospital and sent back to the detention facility. Discharge summaries issued on 15 April 2011 contained a recommendation of supervision by a prison doctor and regular consultations with a neurologist. 19.  In September 2011 the applicant complained about headaches to the attending prison doctor. In response it was recommended that he undergo an additional neurological medical examination in Gaaza prison hospital. However, the hospital refused to admit him because it did not employ a suitably qualified medical specialist, such as a brain surgeon. 20.  In October 2011 the applicant’s lawyer contacted Dr K. from the neurosurgical department of the Scientific Research Institute for Emergency Treatment, who agreed to study the applicant’s clinical records and give his opinion about the state of the applicant’s health at a court hearing on 4 October 2011, where he saw the applicant for the first time. At the hearing the doctor stated that the computer tomography performed on the applicant in 2000 had indicated a brain oedema at the base of the skull. He insisted that any change of the applicant’s lifestyle could induce complications related to the brain oedema and also seizures. Surgery was required to treat the cyst. However, Dr K. concluded that the applicant’s spinal problems were even more serious, as they could leave the applicant entirely paralysed. Nevertheless, the doctor noted that surgery would be only required if the applicant’s health were to deteriorate. The doctor recommended chondroprotective therapy and cerebral bypass surgery for the applicant. He was also to wear a cervical collar. 21.  The applicant also provided the Court with a certificate issued in November 2011 by Dr T., the head of the hospital where the applicant had received medical treatment in 1997-1998. Dr T. argued that the applicant’s condition called for permanent medical supervision by a neurologist and neurosurgeon so that the applicant could be subjected to urgent surgical intervention should the need arise. In Dr T.’s opinion, a detention facility was ill equipped to guarantee such supervision. The applicant also argued that his transfer to a northerly region in which to serve out his sentence had run contrary to the recommendations of his doctor and might have resulted in serious complications of his illness. Finally, he alleged that he lacked effective remedies whereby to complain about the poor quality of his medical treatment. 22.  On 1 December 2011 in response to a request from the applicant’s lawyer, a medical expert commission assessed the applicant’s health and checked for the existence of medical grounds warranting his release from detention. The commission observed that the applicant had received out‑patient treatment and that he had no focal brain injuries, epileptic seizures or significant limitations of his day-to-day activity. Taking account of the results of his dynamic medical examinations, the doctors concluded that the applicant was in satisfactory health and that there were no medical grounds warranting his release from detention. 23.  On 5 April 2012 Dr K. visually examined the applicant. No recommendations were made. 24.  On 4 December 2012 the applicant was examined by a neurologist to whom he complained about headaches, vomiting and vertigo. The doctor recommended drug therapy based on vasobral, piracetam, and vinpocetine. The following visit in January 2013 by the neurologist resulted in a modification of the drug regimen. 25.  On 20 February 2013 a prison doctor approved the applicant’s transfer to a correctional colony, finding him fit to make the journey. 26.  The applicant arrived on 4 March 2013 at correctional colony no. IK‑42/4 in the Astrakhan Region (“colony no. IK-42/4”), where he was seen by the colony doctor, who noted that the applicant had been suffering from brain cyst. At the end of April 2013 the doctor recommended the applicant’s transfer to a hospital for further assessment. No urgency was warranted. 27.  On 25 July 2013 Dr K. drafted another report, assessing the applicant’s condition on the basis of his medical records and the results of his examination on 5 April 2012. Dr K. concluded that his recommendations had not been complied with and that the applicant’s cyst had increased. He stressed that the appropriate treatment could only be ensured in a specialised medical institution, not least because the requisite dynamic monitoring of the applicant’s condition using computer and magnetic resonance tomography examinations needed to be performed every eight months. Lastly, the doctor emphasised that the applicant’s detention in a northerly region could lead to a further deterioration in his health by inducing epileptic seizures and brain ischemia, thus putting his life at risk. 28.  On 8 August 2013 the authorities transferred the applicant to a prison hospital in the Arkhangelsk Region. Following a number of tests, a medical panel declared that the applicant was not suffering from any disability. The applicant was discharged from the hospital with the recommendation that he be re-admitted for further treatment in June 2014. 29.  The last two entries in the applicant’s clinical records are illegible. The parties did not provide the Court with any additional information on the state of his health.