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The main clinical signs of PV are weakness, significant burning sensation in fingers and palms due to the increased blood viscosity and microcirculation disorders, discomfort in the left hypochondrium due to splenomegaly at the background of extramedullary haematopoietic sites development, as well as gross vascular complications (thrombosis) of various localisation. Our clinical case represents a rare cardiac manifestation of the PV in a young man.<\/jats:p>","DOI":"10.1136\/bcr-2021-242008","type":"journal-article","created":{"date-parts":[[2021,6,23]],"date-time":"2021-06-23T11:51:49Z","timestamp":1624449109000},"page":"e242008","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":3,"title":["Polycythemia vera as a rare cause of hypertension in a young man"],"prefix":"10.1136","volume":"14","author":[{"given":"Maria","family":"Vetluzhskaya","sequence":"first","affiliation":[{"name":"Department of Faculty Therapy #2, I M Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Antonina","family":"Abramova","sequence":"additional","affiliation":[{"name":"Department of Faculty Therapy #2, I M Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Karine","family":"Oganesyan","sequence":"additional","affiliation":[{"name":"Internal Medicine Department of University Hospital #4, I M Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Valery","family":"Podzolkov","sequence":"additional","affiliation":[{"name":"Department of Faculty Therapy #2, I M Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2021,6,23]]},"reference":[{"key":"2025082711175866000_14.6.e242008.1","doi-asserted-by":"crossref","first-page":"v85","DOI":"10.1093\/annonc\/mdv203","article-title":"Philadelphia chromosome-negative chronic myeloproliferative neoplasms: ESMO clinical practice guidelines for diagnosis, treatment and follow-up","volume":"26 Suppl 5","author":"Vannucchi","year":"2015","journal-title":"Ann Oncol"},{"key":"2025082711175866000_14.6.e242008.2","unstructured":"Howlader N , Noone AM , Krapcho M , eds. 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