The core epistemic responsibilities of universities: Results from a Delphi study.

Epistemic responsibilities (ERs) of universities concern equipping and empowering its researchers, educators and students to attain, produce, exchange and disseminate knowledge. ERs can potentially guide universities in improving education, research and in service to society. Building on earlier philosophical work, we applied empirical methods to identify core ERs of universities and their constituting elements. We used a three-round Delphi survey, alternating between closed questions to gain consensus, and open questions to let panelists motivate their answers. 46 panelists participated in our study. We reached consensus on six ERs: 1) to foster research integrity, 2) to stimulate the development of intellectual virtues, 3) to address the big questions of life, 4) to cultivate the diversity of the disciplinary fields, 5) to serve and engage with society at large, and 6) to cultivate and safeguard academic freedom. Together the six ERs contain 27 elements. Consensus rates ranged from 73%-100% for both the ERs and their elements. Participants' detailed responses led to substantial improvements in the accompanying descriptions of the ERs. Our findings can inform the debate about the roles and responsibilities of universities, and inform researchers and policy makers to emphasize epistemic tasks of universities.

[The (im?)possibility of a biological substrate for mental disorders]. / Een biologisch substraat voor psychische stoornissen: gouden toekomst of gouden bergen?

BACKGROUND: The constructivist position is often used for psychiatric diseases, in contrast with the general medical view. In the medical view a biological substrate is decisive for a classification as 'disease', which is not the case in the constructivist position.
AIM: We investigate how both positions relate to each other in psychiatric diseases.
METHOD: Analysis based on a conceptual analysis of Ian Hacking's book The Social Construction of What? (1999).
RESULTS: Different objects ought to be distinguished in a constructivist analysis of psychiatric diseases; the disease itself and the idea or concept of that disease. These different objects interact with each other. These interactions can be made explicit by distinguishing interactive kinds from indifferent kinds. Doing so makes it clear that even if a disease is not determined by a biological substrate, this does not imply that a biological substrate is something completely separate from that disease.
CONCLUSION: Hacking's philosophy makes it possible to move beyond the opposition between the medical and the constructivist account of psychiatric diseases by combining both accounts.

Actions of thrombin in the interstitium.

Thrombin is a pleiotropic enzyme best known for its contribution to fibrin formation and platelet aggregation during vascular hemostasis. There is increasing evidence to suggest a role for thrombin in the development of interstitial fibrosis, but interstitial thrombin has not been demonstrated by the direct determination of activity. Rather its presence is inferred by products of thrombin action such as fibrin and activated fibroblasts. This review will focus on possible mechanisms of thrombin formation in the interstitial space, the possible actions of thrombin, processes regulating thrombin activity in the interstitial space, and evidence supporting a role for thrombin in fibrosis.

[Periodic fever, aphthous stomatitis, pharyngitis and cervical adenitis (PFAPA syndrome) in adults]. / Periodisches Fieber, aphthöse Stomatitis, Pharyngitis und Lymphadenitis (PFAPA-Syndrom) im Erwachsenenalter.

BACKGROUND AND OBJECTIVE: The PFAPA syndrome is characterized by a regular appearance of periodic fever, aphthous stomatitis, pharyngitis and cervical adenitis and is associated with a distinctive poor general condition of the patients. Since its first description in 1987 the syndrome has usually been described in children. But we here report its diagnosis in three adult patients. METHODS: At the Department of Otorhinolaryngology/Head and Neck Surgery of the University Medical Center Freiburg, data on 36 patients with PFAPA syndrome were collected between 2004 and 2010.  Data analysis was based on structured questionnaires, medical files of patients and a systematic assessment of the relevant international literature up to April 2011. RESULTS: The average age of the initial occurrence of PFAPA syndrome in the three patients was in the first few months after birth (month 2, 6 and 7). A tonsillectomy had been performed on all three patients in early childhood. As a result two patients had remission of symptoms for several years (4.5 and 12 years) with recurrence of PFAPA attacks while the third patient had no changes in symptoms. CONCLUSION: The PFAPA syndrome is an illness that first manifests itself in children. However, it can persist until adulthood or reappear after phases of remission. A knowledge of this periodic fever syndrome and extensive and close cooperation of general practitioners, paediatricians, internists and ENT specialists will be helpful in early diagnosis of this disorder.

Diagnostic value of ultrasound-guided core needle biopsy in patients with salivary gland masses.

The salivary glands are unique in the diversity and complexity of their pathologies. Because fine needle aspiration cytology and frozen section are associated with major diagnostic difficulties, the authors analyzed the use of core needle biopsy (CNB) for the histologic assessment of salivary gland lesions. A systematic observational clinicopathologic quality assessment study was performed over 81 months including 161 CNB procedures in 76 patients with salivary gland pathologies. Adequate samples containing the target tissue were obtained in 73 patients. These samples revealed malignant disease in 45 (62%) patients, benign disease in 26 (36%) patients, and were inconclusive in 2 (3%) patients. Follow-up uncovered no false-positive or false-negative results. On the basis of secondary histologic and clinical follow-up, the statistical parameters were calculated as follows: sensitivity 94%; specificity 100%; accuracy 96%; positive predictive value 100%; negative predictive value 90%. The advantages and potential limitations of CNB in patients with salivary gland masses are discussed. CNB is a reliable biopsy technique for the assessment of salivary gland pathologies, although limitations remain for the subclassification of some neoplastic lesions. The authors recommend CNB as the biopsy technique of choice for a selection of indications.

[Benefits and importance of tonsillectomy in children and youth with PFAPA syndrome]. / Nutzen und Wertigkeit der Adeno-Tonsillektomie bei Kindern und Jugendlichen mit PFAPA-Syndrom.

BACKGROUND: PFAPA syndrome is characterized by periodic fever, aphthous stomatitis, pharyngitis and cervical adenitis. Tonsillectomy and adenotonsillectomy are surgical treatment options for this periodic fever syndrome, the significance of which will be discussed. MATERIAL AND METHODS: Between 2004 and 2010 we collected data of 36 patients with the diagnosis of PFAPA syndrome. Data analysis was carried out on the basis of structured questionnairs, patients' files as well as a systematic evaluation of international literature up to April 2011. RESULTS: The average age for the appearance of PFAPA episodes was 22 months and they recurred for an average duration of 3-5 days every 14-33 days. During a PFAPA attack, aphthous stomatitis was present in 70% of the patients, pharyngitis was present in 93% and cervical adenitis in 96%. The family history for recurrent fever was positive in 4 of the patients. In 85% cortikosteroids were the only effective medicative treatment with no further symptoms until the next attack. Surgery (tonsillectomy±adenoidectomy) aborted the PFAPA episodes in 10 of 16 patients, in 2 patients the frequency of episodes decreased, 3 patients had no noticeable change and 1 patient died as a result of postsurgical bleeding at another institution. After an average duration of illness of 4 years the PFAPA syndrome was in spontaneous remission in 8 patients. CONCLUSION: Tonsillectomy is an effective treatment option for the PFAPA syndrome. Contrary to a general indication the decision should be personalized considering the benefit vs. the risk of operation with the advice of an ENT specialist.

[Clinical and neuroradiological diagnostics of orbital tumors]. / Klinische und neuroradiologische Diagnostik bei Orbitatumoren.

Exophthalmus is the leading sign of space-occupying lesions of the orbit. Patients may further present with lid swelling, impaired ocular motility and optic neuropathy including a relative afferent pupillary defect, compressive optic disc edema or optic atrophy. Orbital tumors can be classified into various categories depending on the etiology, as lymphoproliferative lesions (in particular non-Hodgkin's lymphoma as the most common malignant orbital tumor of adulthood), optic nerve and meningeal lesions, lacrimal gland lesions, secondary orbital tumors which extend to the orbit from neighboring structures and metastases. Slightly less common are vasculogenic and cystic lesions including cavernous hemangioma as the most common benign orbital tumor of adulthood and dermoid cysts as the most common benign orbital tumor of childhood. Rhabdomyosarcoma is the most common malignant orbital tumor of childhood but has a low total incidence. Orbital tumors might not only cause symptoms like pain, diplopia and loss of visual acuity but may also lead to esthetically disfiguring changes. Particular attention should be paid to underlying systemic diseases and generalized tumor diseases. This article illustrates the approach to a detailed clinical and neuroradiological assessment which is mandatory for the care of orbital tumor patients.

[Therapy of posterior orbital tumors]. / Therapie posterior gelegener Orbitatumoren.

Tumors of the posterior orbit require different therapeutic modalities, depending on the histological entity. In the orbit all structures are in close relationship and the endocranium is in the direct proximity. This requires profound knowledge of topographic anatomy and high therapeutic precision. The surgical approach to the posterior orbit via a ventral intraorbital approach is strongly restricted due to the ocular bulb which consumes most space in the anterior orbit. Therefore if the bulb and vision are to be retained extraorbital surgical corridors are predominantly preferred. These are classified into extracranial and intracranial approaches. In detail, the former are medial transethmoidal orbitotomy, caudal transmaxillar orbitotomy and lateral orbitotomy. Frontolateral and frontotemporal orbitotomy as well as frontal, bifrontal and subfrontal orbitotomy are intracranial approaches. Apart from surgical methods there are several forms of radiotherapy which can be applied to orbital tumors under certain indications. Radiotherapy may be performed with external fractionated photon radiation or as stereotactic radiation, with heavy ions or protons or as brachytherapy. In this article various therapeutic interventions to the posterior orbit and the indications and potential side-effects are described.

[Chondrosarcoma of the larynx. Experience gained in Freiburg since 1999]. / Chondrosarkome des Larynx. Freiburger Erfahrungen seit 1999.

BACKGROUND: Chondrosarcomas are rare tumors of the head and neck. Nevertheless, they display the most common non-epithelial malignancy of the larynx. MATERIALS AND METHODS: Between 1999 and February 2010 we treated six patients with laryngeal chondrosarcoma. The group included two female and four male patients ranging in age from 54 to 82 years. RESULTS: An 82-year-old female patient died 3 months after diagnosis and tracheostomy due to other underlying diseases. An 82-year-old male patient underwent primary radiation therapy. In the other patients, we performed a modified hemilaryngektomy in three cases and a laryngectomy in one. In those four cases, there were no signs of recurrent disease 50, 85, 87 and 95 months after surgery, respectively. There were no local or distant metastases. CONCLUSIONS: Chondrosarcomas of the larynx are slow growing neoplasms. Metastases occur in less than 3% of cases. Complete resection is the therapy of choice. Function-preserving surgical approaches should be favoured.

[Surgical therapy in Graves' orbitopathy]. / Operative Therapie bei endokriner Orbitopathie.

Surgical therapy of Graves' orbitopathy comprises orbital decompression as well as strabismus and lid surgery. The former is primarily carried out during active disease, the latter during inactive disease. Orbital decompression abates increased intraorbital pressure and is thus applicable against dysthyroid optic neuropathy and also reduces exophthalmos. The choice of a specific procedure depends mainly on the experience of the respective center. In this article, the pterional transcranial, transnasal transethmoidal, transconjunctival and swinging eyelid approaches are presented. Eye muscle recession relieves the abnormal tension of fibrotic muscles and thus corrects diplopia. Compared to normal strabismus surgery, the dose-response relationship is increased. Lid lengthening surgery is applied to counter upper or lower lid retraction. If several of these operations are necessary the order is chosen in such a way that downstream procedures cannot change specific results of upstream operations.

[Value of different strategies in the treatment of vestibular schwannoma: therapeutic aspects and literature analysis]. / Wertigkeit unterschiedlicher Methoden zur Behandlung von Akustikusneurinomen: Differenzialtherapeutische Aspekte und Literaturauswertung.

Treatment strategies for vestibular schwannoma have been extended and become more differentiated. An analysis of the international literature with the help of a PubMed search shows that otological and neurosurgical procedures as well as radiation therapies do not only compete but also complement each other. Standardized protocols for the classification of hearing, facial nerve function and quality of life enable a better comparison of functional results. Recent publications discuss - in addition to the standard of preserving facial nerve function and hearing - aspects of vestibular function as well as quality of life, especially in long-term follow up. In addition to effective tumour control, major focus is put on minimizing morbidity. The choice of therapy in patients with neurofibromatosis 2 and recurrent tumours is particularly challenging. The complex topic requires a profound knowledge of differential therapeutic aspects from consulting and treating physicians. Therefore, the individual treatment recommendation should be given in a specialized center.

[Nuchal swelling]. / Nuchale Schwellung.

In the unusual case of a 68-year-old woman with one-sided painless lateral neck swelling, the ENT examination showed a firm nuchal mass (4 × 4 cm) on the right side with no other pathological findings. Angio-MRI confirmed a solid, sharply demarcated tumor with arterial hyperperfusion. Core needle aspiration biopsy was performed, revealing well-circumscribed tufts showing the typical "cannonball" aspect. After preoperative embolisation we performed extirpation of the mass. Histological examination showed an acquired tufted angioma. Clinical as well as radiological follow-up examination detected neither local relapse nor metastases.

[Value and utility of minimal-invasive automatic cutting-needle biopsy as a diagnostic technique in the head and neck]. / Stellenwert und Einsatz der minimal-invasiven automatischen Grobnadelinzisionsbiopsie im Kopf-Hals-Bereich.

BACKGROUND: Lymphadenopathies and unclear masses in the head and neck often require tissue sampling to establish a diagnosis and to guide therapy. Open biopsy and lymph node excision is invasive and may entail general anaesthesia. Fine needle aspiration cytology is minimal-invasive and widely used but includes a high rate of non diagnostic samples and false negative results. Cutting needle biopsy is an established technique outside the head and neck but has found little attention among otorhinolaryngologists up to now. PATIENTS AND METHODS: Between April 2003 and May 2007 we performed a total of 307 cutting-needle biopsies in 143 patients with unclear cervicofacial masses, using side-notch-needles with a diameter of 12-16 Gauge. RESULTS: High-quality tissue cores without crushing artefacts for histopathological studies were obtained without complications from all patients. The target tissue was obtained in 132 of 143 patients, in these cases the sensitivity and accuracy rate for the diagnosis of malignant lesions was 98.9% and 99.2%, respectively. CONCLUSIONS: Ultrasound-guided Cutting-needle biopsy in the head and neck is a safe and reliable biopsy tool with an excellent diagnostic efficacy, which can be performed as an outpatient procedure with low expenditure of time and manpower. Performing the procedure requires substantiated experience in topographic head and neck anatomy as well as sonography of this body region.

[Malignancies arising in sinonasal inverted papillomas]. / Malignome auf dem Boden invertierter Papillome der Nase und Nasennebenhöhlen *

BACKGROUND: Inverted papillomas are primarily benign neoplasms that occur in the nasal cavity and paranasal sinuses. Many aspects of sinonasal inverted papillomas are still controversial and active fields of research. Inverted papillomas generate considerable interest because they are locally aggressive, have a propensity to recur and are associated with malignancy. However, neither the etiology and pathogenesis of these tumors nor the putative role as a precursor to carcinoma and the factors responsible for associated malignancy have been clarified. Whether carcinomas in inverted papillomas arise meta- or synchronous is also still unknown. PATIENTS AND METHODS: In a retrospective study we reviewed the charts of 93 patients with sinonasal inverted papillomas who were treated at our department between 1990 and 2007. Comparison was made between the group of patients with inverted papillomas and associated squamous cell carcinomas and the group of patients with benign inverted papillomas. We undertook a critical analysis of our results compared with the international medical literature. RESULTS: Associated malignancy was found in 11 patients (11.8 %). In each one case a metachronous carcinoma with and without recurrent inverted papilloma was diagnosed, the remaining 9 carcinomas were determined to be synchronous malignancies. Our data suggest, that the association between carcinoma and inverted papilloma is indirect and that the gradual progression from inverted papilloma to a malignant neoplasm is if at all infrequent. Male gender, advanced age and recurrent inverted papilloma do not per se present risk factors for the development of associated malignancies. CONCLUSIONS: Sinonasal carcinomas arise in about 10 % of patients with inverted papillomas, but the ratio of metachronous carcinomas has possibly been overrated up to now. Nevertheless, regular follow-up investigations after surgical resection of inverted papillomas are mandatory. The assumption, that carcinomas in inverted papillomas are less aggressive than carcinomas alone and the definition of high-risk groups for the development of carcinomas seems hazardous.

[Spontaneous tongue necrosis consecutive to rheumatoid hyperviscosity syndrome. A case report and literature review]. / Spontane Zungennekrose bei rheumatoidem Hyperviskositätssyndrom. Fallbericht und Literaturübersicht.

BACKGROUND: Because the tongue is an organ known for its excellent blood supply, ischaemic lingual necrosis is extremely rare within clinical everyday life. Acute lingual circulatory disturbances can result from impairment of venous drainage or more often from ischaemic arterial occlusion. Due to permanent function loss of the tongue, apparent lingual necrosis may lead to severe mutilation of the patient. While vasculitis of the lingual arteries in temporal arteritis is said to be the most frequent causation of tongue necrosis, diagnosing the underlying disease of lingual ischaemia may sometimes be challenging for the clinician. PATIENTS AND METHODS: We present the first reported case of a spontaneous lingual necrosis in a patient with rheumatoid arthritis, due to polyclonal gammopathy with extensive hyperviscosity syndrome and local vasculitis. RESULTS: Clinical symptoms, diagnosis and therapy of tongue necrosis are presented in a case report. Besides an overview on the disorder of hyperviscosity syndrome, the discussion will illustrate pathogenetic, diagnostic and therapeutic considerations of lingual ischaemia. The international medical literature is reviewed to summarize the causes of tongue necroses that are described up to now. The particular importance of temporal arteritis Horton for the otolaryngologist in general and for the development of lingual necrosis in particular is highlighted. CONCLUSIONS: Apart from the presentation of the first reported case of lingual necrosis in rheumatoid hyperviscosity syndrome, the intention of this article is to draw the clinician's attention on the fundamental aspects of lingual ischaemia and of temporal arteritis.

Usefulness of cutting needle biopsy in recurrent and advanced staged head and neck malignancies in a palliative setting.

GOAL OF WORK: Advanced staged and recurrent head and neck malignancies require histological confirmation before planning further treatment. The purpose of this article is to focus on the clinical usefulness of cutting needle biopsies in the head and neck as a minimal invasive procedure to establish a tissue diagnosis in a palliative setting. MATERIALS AND METHODS: A retrospective analysis on 74 core needle biopsies in 32 patients with recurrent and advanced staged head and neck malignancies was performed to determine the advantages of ultrasound-guided cutting needle biopsies compared to open biopsy and fine-needle aspiration cytology in palliative cancer treatment. MAIN RESULTS: We experienced 100% success in obtaining high-quality histopathologic specimens. In 93.8% of the patients, a tissue core of the target organ was successfully obtained. All of the patients tolerated the procedure well without any minor or major complications. CONCLUSIONS: Cutting needle biopsy in the head and neck is a safe and minimal-invasive procedure that can be performed in local anaesthesia on an outpatient basis. In a palliative setting, it can be recommended as an attractive alternative to both fine needle aspiration and open biopsy. It represents a simple and fast device for obtaining a tissue diagnosis with high diagnostic yield and accuracy and low morbidity.

[Peritonsillar abscess: a life threatening disease--diagnostic and therapeutic aspects]. / Peritonsillarabszess mit tödlichem Verlauf--Diagnostische und therapeutische Aspekte.

BACKGROUND: Acute tonsillitis is an extremely common infection seen in children and adults. In most cases, the family doctor is initially consulted. Intratonsillar, peritonsillar and retrotonsillar abscesses are frequent complications in the course of tonsillitis. In those cases, oropharyngeal infection may lead to a descending process with consecutive mediastinitis as a life-threatening condition. PATIENTS AND METHODS: We report the case of a 67-year old man who died of a mediastinitis resulting from a peritonsillar abscess. Clinical findings, radiological diagnostics and antibiotic as well as surgical therapy are illustrated. RESULTS: The patient died due to a septic multi-organic failure despite aggressive antibiotic and surgical therapy by a combined enoral and cervical approach with thoracic drainage. DISCUSSION: Peritonsillar abscess is a potentially life-threatening complication of acute tonsillitis. This must be kept in mind and should therefore lead to an adequate and directed management of this pathology. We discuss the stepwise diagnosis and therapy within the framework of scientific literature.