@article{ReichelRuecklFenwicketal.2019,
  author    = {Reichel, Thomas and Rueckl, Kilian and Fenwick, Annabel and Vogt, Niklas and Rudert, Maximilian and Plumhoff, Piet},
  title     = {Hibernoma of the upper extremity: complete case of a rare but benign soft tissue tumor},
  series = {Case Reports in Orthopedics},
  volume    = {2019},
  journal   = {Case Reports in Orthopedics},
  doi       = {10.1155/2019/6840693},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-201669},
  pages     = {6840693},
  year      = {2019},
  abstract  = {Hibernoma is a rare benign lipomatous tumor showing differentiation of brown fatty tissue. To the author's best knowledge, there is no known case of malignant transformation or metastasis. Due to their slow, noninfiltrating growth hibernomas are often an incidental finding in the third or fourth decade of life. The vast majority are located in the thigh, neck, and periscapular region. A diagnostic workup includes ultrasound and contrast-enhanced MRI. Differential diagnosis is benign lipoma, well-differentiated liposarcoma, and rhabdomyoma. An incisional biopsy followed by marginal resection of the tumor is the standard of care, and recurrence after complete resection is not reported. The current paper presents diagnostic and intraoperative findings of a hibernoma of the upper arm and reviews similar reports in the current literature.},
  language  = {en}
}
@article{SeilerEbertRudertetal.2022,
  author    = {Seiler, Jonas and Ebert, Regina and Rudert, Maximilian and Herrmann, Marietta and Leich, Ellen and Weißenberger, Manuela and Horas, Konstantin},
  title     = {Bone metastases of diverse primary origin frequently express the VDR (vitamin D receptor) and CYP24A1},
  series = {Journal of Clinical Medicine},
  volume    = {11},
  journal   = {Journal of Clinical Medicine},
  number    = {21},
  issn      = {2077-0383},
  doi       = {10.3390/jcm11216537},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-297377},
  year      = {2022},
  abstract  = {Active vitamin D (1,25(OH)2D3) is known to exert direct anti-cancer actions on various malignant tissues through binding to the vitamin D receptor (VDR). These effects have been demonstrated in breast, prostate, renal and thyroid cancers, which all have a high propensity to metastasise to bone. In addition, there is evidence that vitamin D catabolism via 24-hydroxylase (CYP24A1) is altered in tumour cells, thus, reducing local active vitamin D levels in cancer cells. The aim of this study was to assess VDR and CYP24A1 expression in various types of bone metastases by using immunohistochemistry. Overall, a high total VDR protein expression was detected in 59\% of cases (39/66). There was a non-significant trend of high-grade tumours towards the low nuclear VDR expression (p = 0.07). Notably, patients with further distant metastases had a reduced nuclear VDR expression (p = 0.03). Furthermore, a high CYP24A1 expression was detected in 59\% (39/66) of bone metastases. There was a significant positive correlation between nuclear VDR and CYP24A1 expression (p = 0.001). Collectively, the VDR and CYP24A1 were widely expressed in a multitude of bone metastases, pointing to a potential role of vitamin D signalling in cancer progression. This is of high clinical relevance, as vitamin D deficiency is frequent in patients with bone metastases.},
  language  = {en}
}