bluuebunny/crossref_metadata_2025_split huggingface dataset:
Tutoría en la educación superior: análisis de la percepción de profesionales y estudiantes en una universidad pública / Tutoring in Higher Education: Analysis of the Perception of Professionals and Students in a Public University
Authors: Yon Guzmán Silvia Estela , Hernández Marín Gloria del Jesús 
Published: April 2019

Este estudio descriptivo analiza los significados de experiencias relacionadas al proceso de atención tutorial de una universidad pública de Costa Rica. Esto a partir de una muestra no probabilística integrada por participantes voluntarios: especialistas, profesores, y estudiantes. Se utilizó el estudio de caso y la técnica de entrevista semiestructurada: el instrumento se diseñó con un guion preestablecido de 10 preguntas abiertas diferenciadas. Se procesó la información organizada en unidades de análisis, derivadas de cada pregunta guía, a partir de las cuales se generaron los significados, categorías, temas y relaciones; para el análisis descriptivo se utilizaron las frecuencias y porcentajes de las respuestas ofrecidas por los participantes.

Como parte de los resultados, entre las funciones del profesor consejero se destaca la orientación académica y personal, con alto predominio de la académica, que se intensifica en el proceso de matrícula. Dentro de las principales necesidades se externan las académicas, en menor medida las económicas y familiares. Por otro lado, si bien se resalta el papel del profesor consejero por el apoyo que ofrece, los estudiantes demandan mayor atención en el área personal, comunicación e interacción y permanencia del tutor.
Los resultados aquí obtenidos permiten conocer más de cerca la labor tutorial a través de las percepciones que tienen los estudiantes y el profesorado. Los datos alcanzados pueden servir de referencia para desarrollar una propuesta de mejora en el contexto estudiado, así como para contrastar con otras experiencias.
Perbedaan Representasi Sosial Tentang Siswa Junior antara Siswa Kelas XII SMAN A Dan SMAN B
Authors: Lubis Asri Christine , Prawiro Ferdinand 
Published: April 2019

Seniority is a social phenomenon that is naturally found in the school environment. At SMAN A, seniority has been abused by senior students. Meanwhile, at SMAN B, seniority has been applied positively. This difference indicates that there were unique meanings given to the junior students by the seniors in the two schools. This study aims to understand these differences by using social representations theory with the structural approach. The study was conducted in two stages. Free association method was used in the first stage to discover the attributes of social representation of junior students. Researchers asked 206 participants at SMAN A and 198 participants at SMAN B to write down the things that came to mind when they read the word "junior students". The second stage aims to identify the attributes of the central core and peripherals. A total of 92 participants from SMAN A and 92 participants from SMAN B were asked to fill out a questionnaire. The data were analyzed with the centrality test and chi-square test. The results show 18 attributes of social representation of junior students. At SMAN A, attributes of central core are [1] charming appearance and [2] the orientation of students and attribute of peripherals are [1] negative behaviors, [2] the targets of mistreatment, [3] unique appearance, [4] peeve, [5] new students, and [6] paltry. At SMAN B, attributes of central core are [1] charming appearance, [2] the orientation of students, [3] good relationships, and [4] positive behaviors and attributes of peripherals are [1] cool, [2] need to be nurtured, [3] new students, and [4] different generations. This results show differences in social representation of junior students in twelfth-graders at SMAN A and SMAN B. This study suggests that SMAN A make innovation in school regarding to student activities by looking up to SMAN B.
Laryngeal Tiririt (Bridge): for Microlaryngeal Surgery Shake
Authors: Lavarias Brent P. , Bagnes Archimedes B. , Vicente Gil M. 
Published: April 2019

Objective: To design an instrument for steadying instrument handling during microlaryngeal surgery using an operating laryngoscope.
Method: Our device design takes its cue (pun intended) from professional billiards players like our very own Efren “Bata” Reyes. The Laryngeal tiririt (bridge or rake) draws inspiration from the billiards bridge (locally known as tiririt) used to extend the player’s reach when the cue ball is too far to make an accurate shot.
Setting: The Laryngeal tiririt was used and tested by senior residents in microlaryngeal surgeries done in our Institution.
Result: The Laryngeal tiririt greatly improved the accuracy required in laryngeal surgeries without adding up huge set up or expensive equipment.
Keywords: Laryngoscopes, instrumentation
The Spectrum of Ossifying Fibroma
Authors: Cañal Johanna Patricia A. 
Published: April 2019

An ossifying fibroma is a monostotic lesion that occurs in craniofacial bones. It usually presents as a painless well-circumscribed, slow-growing mass in the 3rd and 4th decade. It is a benign fibro-osseous lesion that is part of the bigger spectrum of fibro-osseous lesions which includes fibrous dysplasia, juvenile active ossifying fibroma, psammomatous ossifying fibroma, and extragnathic ossifying fibroma of the skull.

An ossifying fibroma, because of its well-circumscribed nature, lends itself to surgery better than does fibrous dysplasia. Simple enucleation is usually sufficient for ossifying fibromas whereas curettage is probably better suited for fibrous dysplasia.

Radiographically, it is seen as a well-demarcated radiolucency in the mandible or maxilla, more common in the former than the latter. It typically measures anywhere from 1 to 5 cm. There may or may not be a central opacity or calcification, depending on the maturity of the lesion. An immature lesion may present as completely radiolucent whereas a mature lesion may be completely radiopaque, although most lesions demonstrate varying degrees of radiopacity. The images above show 2 samples of the same lesion on opposite sides of the spectrum. Both are well-circumscribed but one is relatively radiolucent while the other is floridly sclerotic.

Is there a pathognomonic finding on x-ray? Unfortunately, there is not one single finding that will distinguish an ossifying fibroma from other fibro-osseous lesion. Does it matter? Yes. X-rays will lead the clinician to one diagnosis or the other and help plan the intended surgery.
Sinonasal Teratoid Carcinosarcoma
Authors: Carnate Jose M. 
Published: April 2019

This is from a 76-year-old male with a fungating maxillary antral mass that extends
into the nasal cavity.
Sinonasal teratoid carcinosarcoma was first described in 1984 and since then 60 cases have been reported. I have had the opportunity to encounter four cases locally, the first one in 1995, another in 2003 and two cases in 2006. There is a male predominance among cases and age has ranged from 18 to 79 years. The usual symptoms reported are epistaxis and nasal obstruction while the most common physical examination finding is that of a nasal cavity mass. A closer look shows a mass at the ethmoid sinus or maxillary antrum with secondary involvement of adjacent sinuses and soft tissue. The tumor is highly malignant rapidly invading adjacent soft tissues and bone and giving rise to regional node and distant metastases. The reported average survival is 1.7 years after diagnosis, with less than 3% surviving beyond three years. Radical surgery, radiotherapy and chemotherapy have all been used with limited success. Histologic sections show a confusing array of teratomatous, sarcomatous and carcinomatous elements represented here by immature squamous and cartilaginous islands, atypical fibrosarcoma-like spindle cell stroma and infiltrating atypical adenocarcinomatous glands.
Blunting of the Scutum: A Key Feature in the Radiologic Diagnosis of Acquired Cholesteatoma
Authors: Yang Nathaniel W. 
Published: April 2019

The determination of the presence of acquired cholesteatoma in the middle ear and mastoid is one of the most common indications for computerized tomographic (CT) imaging of the temporal bone. While the presence of a soft tissue density in the mesotympanum, epitympanum or antrum is a feature of cholesteatomatous disease, CT imaging cannot reliably differentiate soft tissue densities caused by cholesteatoma, middle ear effusion or fluid completely filling the middle ear and mastoid air cell system, granulation tissue, brain, or other soft tissue densities that may fill the air-containing space.1,2 Bone erosion is the radiologic sine qua non of a cholesteatoma. In the absence of bone erosion, a cholesteatoma may be present but cannot be diagnosed on CT imaging studies. One of the earliest abnormalities of a cholesteatoma that can be appreciated on a CT scan is erosion of the scutum, which is the medial aspect of the roof of the external auditory canal, and where the tympanic membrane attaches superiorly. Scutum erosion is most easily seen on coronal CT images.2
Fine Needle Aspiration Cytology of Schwannoma of The Parotid Gland
Authors: Avila Jose Ma. C. 
Published: April 2019

This 52-year-old male underwent fine needle aspiration biopsy of a 2cm diameter parotid mass that was firm, well-delineated, and vaguely moveable,
The mass was not painful and was noted for about a year. The aspiration biopsy smear was quite cellular and showed fragments of spindle-shaped cells with cigar shaped nuclei and scanty to indistinct cytoplasms. Nuclei were vesicular and Verocay-like bodies were identified by cell patterns. The biopsy was read as a benign spindle cell tumor, probably a schwannoma.
Excision of the mass revealed a typical schwannoma by histopathology.
Schwannomas of the parotid gland are rare1 and arise from the intraparotid branches of the facial nerve. Clues to the cytologic diagnosis include the cellular but benign spindly cell population clustered into Verocay body patterns and evidence of cyst degeneration in the form of histiocytes and even lymphocytes.2 Main differential diagnoses include the predominant spindle cell myoepitheliomas3 and some of the low grade sarcomas that may arise from the parotid gland. The even rarer schwannomalike mixed tumor of the parotid4 gland must be also considered.
Superior Semicircular Canal Dehiscence Syndrome: Review of Clinical Manifestations in Adults and Children
Authors: Ibrahim Scheherazade C. , Chiong Charlotte M. , Yang Nathaniel W. 
Published: April 2019

Objective: This report aims to determine the clinical manifestations and management of patients with superior semicircular canal dehiscence syndrome (SSCDS).
Methods:
Study Design: Case series.
Setting: Tertiary hospitals and private clinics
Participants: Out of 30 patients with vestibular vertigo or otologic symptom, 14 patients were diagnosed with SSCDS based on high resolution computed tomographic scan (HRCT). The demographic features, incidence of specific signs and symptoms and management of these patients were described, including the audiograms, vestibular evoked myogenic potential (VEMP) responses and ancillary tests.
Results: Vertigo was the most common vestibular symptom of SSCDS. Tullio phenomenon was elicited in 50% of patients with confirmed dehiscence on HRCT scan. Low frequency (250 Hz and 500 Hz) air-bone gap was noted in 21.4% of patients. Lowered VEMP responses were also noted in 66.7% of patients with confirmed SSCDS. Severity of symptoms may determine its management.
Conclusion: The diagnosis of SSCDS does not conform to a specific clinical presentation or audiologic result thus good clinical correlation is needed in order to raise suspicion of the disease and prompt the clinician to order confirmatory imaging by computed tomographic scan or magnetic resonance imaging. The presence of this syndrome in a proportion of children that is greater than previously reported needs further study as these children may be genetically predisposed to have thinned out superior semicircular canals that eventually become dehisced albeit at an earlier age.
Key words: Superior semicircular canal dehiscence, pure tone audiometry, vestibular evoked myogenic potential
Cavernous Hemangioma of the Mandible
Authors: Papa Enrique C. , Samson Emmanuel S. , Victoria Francisco A. 
Published: April 2019

Objectives: To report a case of hemangioma arising from the mandible and its clinical presentation; describe the similarities with which mandibular hemangioma may mimic odontogenic and non-odontogenic lesions; and identify diagnostic and treatment modalities employed in these patients.
Methods:

Design: Case Report
Setting: Tertiary Public Hospital
Patient: One

Results: A 12-year-old male with intractable gum bleeding exacerbated by intra-operative manipulation of a loose first premolar, and uncontrolled by left external carotid ligation, underwent segmental mandibulectomy. The resected segment revealed multiple porosities and a hollow blood-filled cavity. Histopathology confirmed the diagnosis of cavernous hemangioma.
Conclusion: Though rare, mandibular hemangiomas should be considered in lesions involving the mandible. Diagnosis is difficult with an array of lesions that may appear clinically and radiographically similar. The non-specific signs and symptoms of mandibular hemangioma could lead to exsanguinating hemorrhage if not attended to promptly.

Keywords: cavernous hemangioma, mandible, hemorrhage, external carotid ligation, mandibulectomy
Alternative Self-retaining Retractors for Head and Neck Surgery
Authors: Bargo Roselle C. , Castañeda Samantha S. 
Published: April 2019

Objective: To design affordable, easy-to-use self- retaining retractors that can provide adequate exposure of the operative area in head and neck surgery
Methods:
Design: Surgical Instrumentation
Setting: Tertiary government hospital
Subjects: One
Results: Self-retaining retractors were designed and fabricated from stainless steel, with tissue prongs on one end and a loop for rubber-band attachment to surgical drapes via a towel clip on the other end. Varying prong lengths were devised for different depths of required retraction. Traction tension could be adjusted by varying rubber-band attachment distance. The retractors were tested on a patient undergoing open reduction and internal fixation for a mandibular fracture and evaluated according to ease of application, adequacy of exposure, and tissue trauma.
Conclusion: The self-retaining retractors may be affordable alternatives to commercially-available self-retaining retractors. They are easily applied, with adjustable tension and depth of retraction that can provide adequate exposure with minimal tissue trauma

Keywords: self-retaining retractor, instrumentation
Retroverted Uncinate Process: An Anatomic Variation
Authors: Isla Armando T. , Hernandez Josefino G. 
Published: April 2019

Considerable attention has been directed toward analysis of paranasal sinus anatomy through coronal plane computerized tomographic (CT) imaging in this age of functional endoscopic sinus surgery. Recently, it has become apparent that anatomic variations are also evident on CT analysis of patients. Subtle anatomic features can now be imaged through CT, with a level of clarity previously not afforded by standard sinus radiographs.1

The key to a successful endoscopic sinus surgery is the proper identification of landmarks, and intelligent decision-making should there be any doubts as to what structure lies ahead. The middle turbinate is the main landmark in the region and should be preserved if possible. Attention to the limits of the middle turbinate landmark is one of the keys to uncomplicated surgery.2 The presence of a retroverted uncinate process, wherein the uncinate process ( rather than the middle turbinate) is the first bone to encountered, can be misleading to the rhinologic surgeon and lead to inadequate surgery. Familiarity with anatomic variations such as the retroverted uncinate process should increase the safety and effectiveness of functional endoscopic sinus surgery.
The Lower Cheek Flap Combined with Neurosurgical Approach for Infratemporal Fossa Tumour
Authors: Hamizan Aneeza Khairiyah W. , Ami Mazita , Bakar Azizi Abu , Yunus Mohd Razif Mohamad 
Published: April 2019

Objective: To describe our experience in performing the lower cheek flap for access to the infratemporal fossa combined with the neurosurgical approach.
Methods:
Study design: Case report
Setting: Tertiary Referral Center
Patients: Two
Result: Two unusual tumours involving the infratemporal and middle cranial fossa were excised using this combined approach. The infratemporal fossa tumour was accessed via the lower cheek flap while the intracranial portion was resected from above via craniotomy.
Conclusion: The lower cheek flap in combination with the neurosurgical approach allows optimal exposure to tumours involving the infratemporal and middle cranial fossae. It has less complications and better aesthetic outcome compared to other approaches.
Keywords: Lower cheek flap, infratemporal fossa tumour
Cystic Cochleovestibular Malformation (Incomplete Partition Type 1)
Authors: Yang Nathaniel W. 
Published: April 2019

A 5-year old female with bilateral profound hearing loss underwent computerized tomographic imaging of the temporal bone as part of the work-up to determine the etiology of her deafness, and to delineate middle and inner ear anatomy prior to cochlear implantation. The examination revealed an inner ear malformation which, based on the newest classification of cochleovestibular malformations by Sennaroglu and Saatci, is called an incomplete partition type I (IP-1) or cystic cochleovestibular malformation. This condition is characterized by (1) a cochlea that is lacking the entire modiolus and cribriform area, resulting in a cystic appearance, and (2) a large cystic vestibule.1

Temporal bone imaging is among the most useful examinations in the etiological investigation of idiopathic sensorineural hearing loss in children, with up to 30%2 of the imaging studies showing an abnormality. The detection of inner ear malformations is important, as some abnormalities are associated with an increased risk of meningitis or progressive hearing loss following head trauma.3 Likewise, the approach to cochlear implantation may be influenced by the type of malformation. In this particular patient, the use of a cochlear implant with a full-band electrode design may be more appropriate, as the location of the neural elements within the cystic cochlea is not definitely known.
Nodular Fasciitis in a One-Year-Old Male: A Diagnostic Dilemma
Authors: Fernando Adrian F. , Chua Antonio H. , Sia-Vargas Lily L. 
Published: April 2019

Objective: To present a rare case of nodular fasciitis presenting as a supra-auricular mass.

Methods:
Design: Case Report
Setting: Private Tertiary University Hospital
Patient: One

Results: A one-year-old boy presented with an initially painless, left supra-auricular mass that rapidly enlarged from < 1 cm to 3 cm (widest diameter) in a two-month period. Sarcoma was initially considered over an inflammatory process as the mass was non-responsive to antibiotic therapy. Fine-Needle Aspiration Cytology (FNAC) and High-Resolution Computed Tomography (HRCT) with contrast revealed benign cytologic and radiologic findings making nodular fasciitis the primary impression.

The patient eventually underwent complete surgical excision of the left supra-auricular mass. Histopathologic findings then showed a stroma rich in collagen and myxoid ground substance and loose array of short S-shaped fascicle cells with scattered lymphocytes, macrophages and red blood cells consistent with nodular fasciitis.

Conclusion: Nodular fasciitis is a rare benign myofibroblastic soft tissue tumor which typically presents as a rapidly progressive nodular lesion in the head and neck region of the young pediatric age group. Cytopathologic recognition with FNA is a challenge. The gold standard of treatment is still surgical and in most reported cases, curative. More importantly, early clinical recognition and correlation with radiologic and histopathologic appearance is very important to avoid unnecessary work-ups and over-treatment.

Keywords: Nodular fasciitis; pseudosarcomatous fasciits; aggressive fibromatosis, desmoid tumor
Typical Laryngeal Carcinoid Recurrence and its Management by Conservative Surgery
Authors: Hussain Syed Majid , Ahmad Rauf 
Published: April 2019

Objective: Recurrence of a typical laryngeal carcinoid is extremely rare after surgery with tumor-free margins on histopathology. We present a rare case of typical laryngeal carcinoid that recurred after eight years and was managed by conservative surgery.
Methods:
Design: Case report
Setting: Tertiary Government Hospital
Patient: One
Results: A known case of typical laryngeal carcinoid treated eight years back reported again with the same symptoms he previously had. On evaluation local tumor recurrence was identified with a negative metastatic workup. The patient was subjected to microlaryngeal excision which was adequate histopathologically. He has had no evidence of disease on follow up of two years.
Conclusion: A typical laryngeal carcinoid tumor may present differently and recur locally but conservative surgery is still an option if local nodal and distant metastatic spread is ruled out.
Key words: neuroendocrine tumor,typical laryngeal carcinoid, microlaryngeal excision. hemoptysis