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  • 1. Andersson, Carola
    et al.
    Österlundh, Gustaf
    Enlund, Fredrik
    Kindblom, Lars-Gunnar
    Hansson, Magnus
    Umeå universitet, Medicinska fakulteten, Institutionen för medicinsk biovetenskap.
    Primary spinal intradural mesenchymal chondrosarcoma with detection of fusion gene HEY1-NCOA2: a paediatric case report and review of the literature2014Inngår i: Oncology Letters, ISSN 1792-1074, E-ISSN 1792-1082, Vol. 8, nr 4, s. 1608-1612Artikkel, forskningsoversikt (Fagfellevurdert)
    Abstract [en]

    Mesenchymal chondrosarcoma is an extremely rare malignant tumour that most commonly originates in the bone, but is also present in extraskeletal sites. The tumour is morphologically characterized by a biphasic pattern of small round cells and islands of cartilage. Spinal mesenchymal chondrosarcomas are even rarer and, therefore, few investigations exist regarding the biological behaviour of the tumours. In the present study, we report a case of a 10-year-old female presenting with 9 months of back pain and radiographic findings of an intradural lesion measuring 1.5 cm at the level of Th4. The tumour was completely excised and subjected to pathological analyses. Following detection of the HEY1-NCOA2 fusion gene, the tumour was morphologically and immunohistochemically defined as an intradural mesenchymal chondrosarcoma attached to the dura mater. In this study, we validate the recent identification of the fusion gene HEY1-NCOA2 in paediatric extraskeletal mesenchymal chondrosarcomas: The relevant literature is reviewed and further discussed in relation to our findings.

  • 2.
    Loizou, Christos
    et al.
    Umeå universitet, Medicinska fakulteten, Institutionen för klinisk vetenskap, Öron- näs- och halssjukdomar.
    Laurell, Göran
    Umeå universitet, Medicinska fakulteten, Institutionen för klinisk vetenskap, Öron- näs- och halssjukdomar. Department of Surgical Sciences, Division of Otorhinolaryngology, Uppsala University.
    Lindquist, David
    Umeå universitet, Medicinska fakulteten, Institutionen för strålningsvetenskaper, Onkologi.
    Öfverman, Charlotte
    Umeå universitet, Medicinska fakulteten, Institutionen för strålningsvetenskaper, Onkologi.
    Stefansson, Kristina
    Umeå universitet, Medicinska fakulteten, Institutionen för strålningsvetenskaper, Onkologi.
    Nylander, Karin
    Umeå universitet, Medicinska fakulteten, Institutionen för medicinsk biovetenskap, Patologi.
    Olofsson, Katarina
    Umeå universitet, Medicinska fakulteten, Institutionen för klinisk vetenskap, Öron- näs- och halssjukdomar.
    Incidence of tonsillar cancer in northern Sweden: Impact of human papilloma virus2015Inngår i: Oncology Letters, ISSN 1792-1074, E-ISSN 1792-1082, Vol. 10, nr 6, s. 3565-3572Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The incidence rate of tonsillar cancer is increasing worldwide. The current study identifies a parallel increase in the incidence of tonsillar cancer, human papilloma virus (HPV) and p16 expression among a population from northern Sweden, a sparsely populated area, confirming the strong association between p16 and HPV infection in tonsillar tissue. Data from the Swedish Cancer Registry was assessed to identify cases of tonsillar cancer in the northern territorial area of Sweden. HPV DNA was extracted from paraffin embedded diagnostic biopsies and detected by polymerase chain reaction using general primers Gp5+/6+ and CpI/IIG. Expression of p16 was identified by immunochemistry. Patients were grouped into urban or rural residence categories. A total of 214 cases were identified, comprising 155 (72.4%) men and 59 (27.6%) women, and 65 of these patients, who presented between 2000 and 2012, were analyzed. The overall median age for the analyzed patients was 58 years; 48 (74%) were males (median age, 57.5 years) and 17 (26%) were females (median age, 65 years). Of the 65 specimens, 59 (91%) were positive for HPV, and 62 (95%) expressed p16. The incidence of tonsillar cancer in the cohort demonstrated a 2-fold increase between 1990 and 2013; specifically, a 2.7-fold increase was observed in men whilst the female group exhibited only a small increase. These findings demonstrate a strong association between p16 expression and HPV infection in tonsillar malignancies. The incidence of HPV-positive tonsillar cancer has increased in recent years, even in sparsely populated regions, as demonstrated in northern Sweden.

  • 3.
    Sgaramella, Nicola
    et al.
    Umeå universitet, Medicinska fakulteten, Institutionen för medicinsk biovetenskap, Patologi. Multidisciplinary Department of Medical, Surgical and Dental Specialties, Second University of Naples; 3 Department of Neuroscience Reproductive and Dentistry Sciences, University of Naples Federico II, I-801 38 Naples, Italy.
    Wilms, Torben
    Umeå universitet, Medicinska fakulteten, Institutionen för medicinsk biovetenskap, Patologi. Umeå universitet, Medicinska fakulteten, Institutionen för klinisk vetenskap, Öron- näs- och halssjukdomar.
    Boldrup, Linda
    Umeå universitet, Medicinska fakulteten, Institutionen för medicinsk biovetenskap, Patologi.
    Loljung, Lotta
    Umeå universitet, Medicinska fakulteten, Institutionen för medicinsk biovetenskap, Patologi.
    Gu, Xiaolian
    Umeå universitet, Medicinska fakulteten, Institutionen för medicinsk biovetenskap, Patologi.
    Coates, Philip J.
    Hassellöf, Petra
    Califano, Luigi
    Lo Muzio, Lorenzo
    Fåhraeus, Robin
    Umeå universitet, Medicinska fakulteten, Institutionen för medicinsk biovetenskap, Patologi. RECAMO, Masaryk Memorial Cancer Institute, 656 53 Brno, Czech Republic; University Paris Diderot, INSERM UMRS1162, Paris 75010, France.
    Spaak, Lena Norberg
    Franco, Renato
    Tartaro, Gianpaolo
    Colella, Giuseppe
    Santagata, Mario
    Orabona, Giovanni Dell'Aversana
    Chirico, Fabrizio
    Danielsson, Karin
    Umeå universitet, Medicinska fakulteten, Institutionen för odontologi.
    Troiano, Giuseppe
    Ardito, Fatima
    Nylander, Karin
    Umeå universitet, Medicinska fakulteten, Institutionen för medicinsk biovetenskap, Patologi.
    Ethnicity based variation in expression of E-cadherin in patients with squamous cell carcinoma of the oral tongue2018Inngår i: Oncology Letters, ISSN 1792-1074, E-ISSN 1792-1082, Vol. 16, nr 5, s. 6603-6607Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The oral tongue is the most common site for tumours within the oral cavity. Despite intense research, there has been no improvement in the survival rate for patients with oral tongue squamous cell carcinoma (OTSCC) during the last decades. Differences between oral cancer patients based on ethno-geographical distribution have been reported. The present study used immunohistochemistry to evaluate commonly used markers of cancer cell phenotypes, E-cadherin, -catenin and cytokeratins 5 and 19, in 120 patients with OTSCC. To evaluate the impact of ethnicity, patients from Sweden and Italy were included. A higher proportion of Swedish patients exhibited high expression of E-cadherin in their tumours (P=0.039), and high levels of E-cadherin in Swedish OTSCC patients that had succumbed to their disease were associated with poor prognosis. These data demonstrated differences in the pathological characteristics of OTSCC between two different European populations. The findings emphasise the need to take ethnicity/geographical location of patients into account when comparing results from different studies of OTSCC.

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