Author information from the last article
E-post: gtjonnfj@ous-hf.no
Avdeling for blodsykdommer
Oslo universitetssykehus
og
Institutt for klinisk medisin
Universitetet i Oslo
Forfatterbidrag: idé, litteratursøk, bearbeiding av manus og godkjenning av innsendte versjon.
Geir E. Tjønnfjord er avdelingsleder og professor i hematologi.
Articles by Geir E. Tjønnfjord
Chronic neutropenia in adults
- Sara Kristina Viberg Tjønnfjord,
- Maryan Mohamed Ali,
- Geir E. Tjønnfjord
12.06.2023:
Neutrophils are an important component of the innate immune system, and they prevent bacterial and fungal infections by phagocytosis and killing of pathogens. Neutropenia is defined as an abnormally low number of circulating neutrophils, and the term chronic neutropenia is used when it lasts more...
A man in his sixties with chondritis and bone marrow failure
- Øyvind Midtvedt,
- Asbjørg Stray-Pedersen,
- Helena Andersson,
- Ragnar Gunnarsson,
- Kristian Tveten,
- Maryan Mohamed Ali,
- Geir E. Tjønnfjord
28.02.2022:
A man in his late sixties with treatment-resistant relapsing polychondritis and bone marrow failure was found to have a rare and newly identified syndrome not previously reported in Norway. A man in his late sixties was transferred to a university hospital with a query about underlying...
Paroxysmal nocturnal haemoglobinuria at Oslo University Hospital 2000–2010
- Lise Sofie Haug Nissen-Meyer,
- Geir E. Tjønnfjord,
- Elzbieta Golebiowska,
- Jens Kjeldsen-Kragh,
- Çiğdem Akalin Akkök
16.06.2015:
The rare disease paroxysmal nocturnal haemoglobinuria (PNH) has an estimated incidence of 1.3 cases per million population per year (1). Patients are classified as either classic PNH (without other bone marrow disease), secondary PNH (associated with bone marrow diseases such as aplastic anaemia and...
Uncommon adverse effect of a common medication
- Kari Lenita Falck Moore,
- Odd Kildahl-Andersen,
- Randi Kildahl-Andersen,
- Geir E. Tjønnfjord
22.01.2013:
A woman in her fifties had been suffering for many years from iron deficiency anaemia as a result of unexplained heavy urinary iron loss (1). She had been receiving blood transfusions and intravenous iron supplements for 15 years, most recently in the form of large doses of iron (III) carboxymaltose...
Chronic lymphocytic leukaemia in Norway – incidence and prognostic markers at diagnosis
- Geir E. Tjønnfjord,
- Bernt E. Ly,
- Tom Børge Johannesen,
- Anne Tierens,
- Klaus Beiske,
- Sverre Heim,
- Viggo Jønsson
02.10.2012:
Chronic lymphocytic leukaemia (CLL) is the most common form of leukaemia in Norway. A Norwegian study from the late 1990s indicated an incidence of almost 4/100 000 inhabitants per year, with a male-female ratio of 1.5; the median age at the time of diagnosis was 72 years at which time 78 % of the...
Familial occurrence of chronic lymphocytic leukaemia in Norway
- Geir E. Tjønnfjord,
- Viggo Jønsson,
- Bernt E. Ly,
- Tom Børge Johannesen
02.10.2012:
The highest incidence of CLL is found in Europe and in population groups of European extraction elsewhere in the world (1). A low incidence is seen in South and East Asia, particularly among the Japanese. Migration surveys show that the incidence remains low among Asians, even those born in the...
Large granular lymphocytic leukaemia
- Silje Michalsen,
- Elisabeth Schrumpf,
- Klaus Beiske,
- Anne Tierens,
- Vigdis Stenberg,
- Geir E. Tjønnfjord
28.05.2009:
Large granular lymphocytes (LGL) comprise 10 – 15 % of lymphocytes in blood in healthy adults (1). Most of these lymphocytes (85 %) are CD3 – natural killer (NK) cells and the rest are CD3 + cytotoxic T cells. LGLs are medium-sized round or oval cells with eccentrically placed nuclei with condensed...