Utilizing Deep Learning for Diagnosing Radicular Cysts.

OBJECTIVES: The purpose of this study was to develop a deep learning algorithm capable of diagnosing radicular cysts in the lower jaw on panoramic radiographs. MATERIALS AND METHODS: In this study, we conducted a comprehensive analysis of 138 radicular cysts and 100 normal panoramic radiographs collected from 2013 to 2023 at Clinical Hospital Dubrava. The images were annotated by a team comprising a radiologist and a maxillofacial surgeon, utilizing the GNU Image Manipulation Program. Furthermore, the dataset was enriched through the application of various augmentation techniques to improve its robustness. The evaluation of the algorithm's performance and a deep dive into its mechanics were achieved using performance metrics and EigenCAM maps. RESULTS: In the task of diagnosing radicular cysts, the initial algorithm performance-without the use of augmentation techniques-yielded the following scores: precision at 85.8%, recall at 66.7%, mean average precision (mAP)@50 threshold at 70.9%, and mAP@50-95 thresholds at 60.2%. The introduction of image augmentation techniques led to the precision of 74%, recall of 77.8%, mAP@50 threshold to 89.6%, and mAP@50-95 thresholds of 71.7, respectively. Also, the precision and recall were transformed into F1 scores to provide a balanced evaluation of model performance. The weighted function of these metrics determined the overall efficacy of our models. In our evaluation, non-augmented data achieved F1 scores of 0.750, while augmented data achieved slightly higher scores of 0.758. CONCLUSION: Our study underscores the pivotal role that deep learning is poised to play in the future of oral and maxillofacial radiology. Furthermore, the algorithm developed through this research demonstrates a capability to diagnose radicular cysts accurately, heralding a significant advancement in the field.

Aesthetic and Functional Outcomes of Upper Blepharoplasty Combined with Dacryoadenopexy in Lacrimal Gland Prolapse.

INTRODUCTION: Lacrimal gland prolapse (LGP) is a term used to describe a benign, anterior displacement of the lacrimal gland. If this condition is not properly addressed during upper blepharoplasty, the aesthetic and functional results are less than optimal. This study aimed to report the surgical outcomes of upper blepharoplasty combined with dacryoadenopexy in patients with LGP. METHODS: We reported an unusual case of severe LGP in a young patient. In addition, we performed a systematic review of the English literature on surgical cases of LGP published between 1973 and 2023. Eligible articles were analyzed for individual patient data (IPD) and aggregate patient data (APD). The primary predictor variable was the surgical technique used for lacrimal gland repositioning/suspension. The primary outcome variable was relapse rate. RESULTS: The bibliographic search retrieved 488 surgical cases of LGP: 12 in IPD, and 476 in APD datasets. The relapse rates in the IPD and APD cohorts were 8.3% (1/12) and 1.2% (6/476), respectively. Within the APD dataset, no significant difference in the relapse rates between dacryoadenopexy via suture suspension and Whitnall's ligament suspension (5/409 and 1/20, respectively; P > 0.05) was observed. Light cauterization of the lacrimal gland capsule and surrounding soft tissues was performed in mild LGP cases (< 4 mm prolapse), with a relapse rate of 0% (0/47). CONCLUSION: Upper blepharoplasty combined with dacryoadenopexy proved to be a safe surgical procedure with very satisfactory aesthetic outcome and minimal relapse rate. LEVEL OF EVIDENCE III: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

Malignancy and "Violated Neck" Rates in Consecutive Cohort of 79 Adult Patients With Solitary Cystic Neck Mass-Lessons Learned and Recommendations for Clinical Practice Guidelines.

OBJECTIVE: The neck region is a common site for solitary cystic neck mass (SCNM) of various etiologies, including congenital, inflammatory, and neoplastic. In adults, the primary focus is excluding malignancy. The objective of this study was to retrospectively analyze the accuracy of available diagnostic technologies for the differentiation of benign and malignant SCNM in adult patients. The study aimed to develop new clinical practice guidelines for evaluating and managing SCNM. METHODS: The primary predictive variables were the diagnostic utilities of fine-needle aspiration cytology (FNAC), ultrasound (U/S), multislice computed tomography, and magnetic resonance imaging. The study's endpoint was the overall diagnostic accuracy in differentiating between benign and malignant SCNM. The final diagnosis was based on histopathology. RESULTS: The study included 79 adult patients: 55 (69.62%) male and 24 (30.38%) female ( P <0.05). The mean age at presentation was 42.1 years (range: 18-84 years). Solitary cystic neck mass was distributed in the anterior neck region in 30 (37.97%) patients and the posterolateral neck regions in 49 (62.03%) patients ( P <0.05). The posterolateral neck regions had a significantly higher rate of malignant SCNM than the anterior neck region [19/49 (38.78%) versus 1/30 (3.33%)] ( P <0.05). There was no statistically significant difference between the U/S+FNAC and U/S+FNAC+multislice computed tomography and/or magnetic resonance imaging groups in differentiating benign and malignant SCNM (40/42 versus 36/37, P >0.05). "Violated neck" was recorded in 2 cases. CONCLUSION: A systematic investigation protocol should be applied to evaluate adult patients with SCNM.

Free temporalis muscle fascia graft in dural reconstruction following surgical resection of intermediate and malignant skull base tumors: A 10-year experience from a single center.

BACKGROUND: Data from patients with post-ablative dural defects reconstructed using a free temporalis muscle fascia graft (FTFG) after resection of anterior or central skull base tumors were retrospectively analyzed. METHODS: The primary predictor and outcome variables were the reconstructive methods for dural repair and postoperative cerebrospinal fluid (CSF) leakage rate, respectively. RESULTS: Eighty patients were included, and 94 postoperative dural reconstructions were performed using FTFG. The postoperative CSF leakage rate was 3.19%. The postoperative CSF leakage rates did not significantly differ between open and endonasal endoscopic surgeries (1.92% vs. 4.88%; p > 0.05). In cases completed using the endonasal endoscopic approach, the postoperative CSF leakage rate was significantly associated with the intraoperative CSF leak flow (p < 0.05). CONCLUSIONS: Post-ablative dural defect reconstruction using FTFG resulted in low postoperative CSF leakage and complication rates comparable to those of free fascia lata graft from available literature.

Harmonic Scalpel-Assisted Endonasal Endoscopic Resection of the Vascular Tumors of the Anterior Skull Base.

Vascular tumors represent a challenging pathologic subset for surgical treatment as they show a propensity for profuse bleedings. This is especially applicable to the skull base region, where surgical access is difficult due to its complex anatomy. To overcome this problem, the authors introduced the use of a harmonic scalpel in endoscopic skull base surgery for vascular tumors. Here, the authors report the outcomes of endoscopic harmonic scalpel-assisted surgery in 6 juvenile angiofibromas and 2 hemangiomas. All surgeries were performed using Ethicon Endo-Surgery HARMONIC ACE 5 mm Diameter Shears. The median intraoperative blood loss was 400 mL (range: 200-1500 mL). The median length of hospital stay was 7 days (range: 5-10 days). Recurrence was recorded in 1 patient with juvenile angiofibroma, which was successfully resolved with revision surgery. In this institutional experience, ultrasonic technology showed precise cutting with minimal bleeding, resulting in reduced surgical morbidity compared with conventional endoscopic instruments.

Endoscopic, endoscopic-assisted and open approaches in the treatment of juvenile angiofibroma: what has been new in the past decade (and 1586 cases)?

PURPOSE: Juvenile angiofibroma (JA) is a benign, but locally invasive tumor of the nasopharynx. Surgical resection of JA is performed through endoscopic (EA), endoscopic-assisted (EAA), or open approaches (OA). The management of these tumors is constantly evolving. We aimed to compare the surgical efficiency and morbidity of EA, EAA, and OA in JA treatment by conducting a systematic review of the literature published over the last 10 years. METHODS: A systematic review of the English literature on surgical cases of JA published between 2012 and 2022 was performed. Eligible articles were analyzed for individual patient data (IPD) and aggregate patient data (APD). The primary predictor variable was the surgical approach. The primary outcome variable was recurrence rate. RESULTS: The search retrieved 75 articles reporting 1586 JA surgical cases; 129 in IPD, and 1457 in APD data sets. Within the IPD data set, recurrence rates were significantly lower in cases completed by EA than that by OA (p < 0.05). There was no significant difference in recurrence rates between the EA and EAA groups (p > 0.05). EAA had a lower recurrence rate than that of OA (p < 0.05). For the APD data set, the recurrence rate following EA was significantly lower than that following OA (p < 0.05). There was no significant difference in recurrence between the EA and EAA groups (p > 0.05), and between the EAA and OA groups (p > 0.05). CONCLUSIONS: EA represents the method of choice for mild and moderately advanced JA. EAA and OA still play important roles in the treatment of advanced-stage JA.

Prognostic significance of cystic nodal metastasis in HPV-positive oropharyngeal cancer.

This is a brief communication stressing some critical points associated with cystic nodal metastasis (CNM) in human papillomavirus (HPV) positive oropharyngeal squamous cell carcinoma (OPSCC) and its implication on treatment protocols and outcomes.

Herpes Zoster Opthalmicus-Related Ophthalmoplegia: Anatomical, Pathogenetic, and Therapeutic Perspectives.

OBJECTIVE: To investigate the anatomical, pathogenetic, and pharmacological characteristics of herpes zoster ophthalmicus (HZO)- related ophthalmoplegia. METHODS: Case report-based systematic review was performed. RESULTS: This study included 96 patients (54 [56.25%] women and 42 [43.75%] men [P = 0.221]). The mean age at presentation was 64.32 ± 17.48 years. All the patients included in the study had HZO- related ophthalmoplegia, with rash presenting as initial symptom in 87 (90.62%) cases, and diplopia in 9 (9.38%) cases. Thirty-seven (38.54%) patients achieved complete recovery, whereas 59 (61.46%) patients had permanent ophthalmoplegia. Females recovered in 26/54 cases and males in 11/42 cases (P = 0.028). Recovery rates after peroral versus intravenous antivirals (15/38 versus 19/46) and > 10 days versus ≤10 days antiviral treatment (22/54 versus 12/30) did not significantly differ ( P = 0.865 and P = 0.947, respectively). immunocompetent patients treated with corticosteroids had significantly better recovery rates compared to immunodeficient counterparts (17/34 [50.00%] and 5/22 [22.73%], respectively [ P = 0.041]). CONCLUSIONS: The outcome of HZO-related ophthalmoplegia is associated with gender, immune status, corticosteroid use, and time of antiviral treatment initiation.

Patho-Anatomic Spectrum of Branchial Cleft Anomalies: Proposal of Novel Classification System.

PURPOSE: Histogenesis, nomenclature, and classification of branchial cleft anomalies (BCAs) have been subjects of controversy for decades. The purpose of this study was to investigate the accuracy of current developmental theories (congenital, lymph node, and hybrid branchial inclusion theories) in defining the anatomic and histopathological characteristics of BCAs. METHODS: Ninety consecutive patients with BCAs who underwent surgical excision were enrolled in this 2-center retrospective cohort study. RESULTS: The present study included 90 patients: 46 (51.11%) women and 44 (48.89%) men (P > .05). The mean age at presentation was 31.89±17.31 years. Altogether, 92 BCAs were identified within the study population including 49 (53.26%) on the left side and 43 (46.74%) on the right side (P > .05). The BCAs included 79 (85.87%) branchial cleft cysts, 11 (11.96%) branchial cleft sinuses, and 2 (2.17%) branchial cleft fistulae. Three (3.26%) BCAs were distributed in the head regions, 88 (95.65%) in the neck regions, and 1 (1.09%) in the thoracic cavity. Following surgery, lymphoepithelial tissue was detected in the histopathological examination in 83 (90.22%) BCAs. The hybrid branchial inclusion theory exhibited significantly higher accuracy in defining patho-anatomic characteristics of BCAs than the branchial apparatus, precervical sinus, thymopharyngeal, and inclusion theories (90.22, 9.78, 2.17, 0.00, and 0.00%; respectively) (P < .05). CONCLUSION: The novel branchial node (BN) classification system based on the hybrid branchial inclusion theory appears to be superior to other classification systems in determining the patho-anatomy of BCAs.

Dirofilaria repens microfilaremia in humans: Case description and literature review.

INTRODUCTION: Dirofilaria repens is a vector-borne filaroid helminth of carnivorous animals, primarily domesticated dogs. Humans are considered to be accidental hosts in which D. repens rarely reach sexual maturity but induce local inflammation, mainly in subcutaneous and ocular tissues. METHODS: In the current study, we present the detection of multiple adults of D. repens, endosymbiont Wolbachia sp. and microfilariae by molecular analysis in peripheral tissues and bloodstream of a human host. A subsequent meta-analysis of published literature identified 21 cases of human infection with adult D. repens producing microfilariae. RESULTS: Within the study population, there were 13 (59.09%) males, eight (36.36%) females and, in one (4.55%) case, sex was not reported. A total of 11 (50.00%) cases had subcutaneous dirofilariasis, six (27.27%) had ocular dirofiliariasis, with single cases (4.55% each) of genital, mammary, lymphatic and a combination of subcutaneous and pulmonary dirofilariasis described. In one (4.55%) case, the primary anatomical site of adult D. repens could not be found. D. repens microfilariae were detected in the local tissue (local microfilariasis) in 11 (50.00%) cases and the peripheral blood (microfilaremia) in 11 (50.50%) cases. Final identification of D. repens microfilariae was based on morphological detection in 14 (63.64%) cases, and molecular detection in eight (36.36%) cases. CONCLUSION: The results of this study suggest that humans may act as a final host for D. repens, however its role as a source of D. repens infection is less clear.

Branchial cleft anomalies: hybrid "Branchial Inclusion" theory.

PURPOSE: Branchial cleft anomalies (BCAs) are developmental malformations of the head and neck region. Their histogenesis has been the subject of controversy and is not fully understood. This study aimed to test all present developmental theories ("branchial apparatus," "precervical sinus," "thymopharyngeal," and "inclusion" theories) on a sample of 48 BCAs from a single institution. METHODS: We performed a retrospective analysis of clinical-epidemiological and anatomical-pathological characteristics of BCAs treated over a 12-year period in our hospital. RESULTS: Overall, 46 patients (24 [52.17%] women and 22 men [47.83%]) underwent surgical excision of 48 BCAs. The mean patient age at presentation was 31.65 ± 19.40 years. Branchial cleft cysts were found in 42 (87.50%) cases, and branchial cleft sinuses were found in six (12.50%) cases. Eight (16.67%) BCAs were distributed in the preauricular region, 34 (70.83%) at the anterior border of the sternocleidomastoid muscle (SCM), three (6.25%) at the posterior border of the SCM, two (4.17%) in the suprasternal notch, and one (2.08%) in the retrosternal space. Histopathologically, 39 (81.25%) BCAs had a lymphoepithelial structure and nine (18.75%) BCAs had solitary epithelial cells. Inflammation and infection were observed in 24 (50%) and 12 (25%) cases, respectively. CONCLUSION: None of the hypothesized developmental theories fully explain the embryonic origin of BCA in our study sample. A possible explanation of BCA histogenesis is through the hybrid "branchial inclusion" theory.

Congenital Neck Masses.

ABSTRACT: Congenital neck masses (CNMs) are developmental malformations that present with a wide spectrum of clinical symptoms and signs. They account for 21% to 45% of neck masses in children and 5% to 14% in adults. This study aimed to present the clinical manifestations and treatment of CNM from single-institution experiences. A retrospective analysis of patients surgically treated for CNM in a 12-year period was performed. Altogether, 117 patients (female/male ratio, 1:1.05) were diagnosed with CNM. The mean age at presentation was 26.91 years (range, 0.01-84 years). Within the study population, 120 CNMs were identified: 52 (43.33%) thyroglossal duct remnants, 48 (40.00%) branchial cleft anomalies, 7 (5.83%) epidermoid/dermoid cysts, 4 (3.33%) hemangiomas, 3 (2.50%) lymphangiomas, 1 (0.83%) hemangiolymphangioma, 1 (0.83%) hemangioendothelioma, 1 (0.83%) internal laryngocele, 1 (0.83%) external laryngocele, 1 (0.83%) ectopic thyroid gland, and 1 (0.83%) parathyroid cyst. The lateral neck region was the most frequently affected anatomical site, followed by the midline neck location and mediastinum (54%, 45%, and 1%, respectively). Surgical excision was performed in all cases. Recurrence was recorded in 5 (4.17%) patients. The results of this study provide comprehensive information regarding the clinical spectrum of CNM. Successful management of these lesions depends on a thorough understanding of neck embryology and anatomy. Misdiagnosis and improper treatment increase the morbidity and recurrence rate of CNM.

Epidermoid and Dermoid Cysts of the Head and Neck.

ABSTRACT: Epidermoid and dermoid cysts (ECs and DCs) are congenital anomalies occurring in areas of embryonic fusion. Their incidence in the head and neck region is low and ranges from 1.6% to 7%. The aim of this study is to report on the clinical characteristics, treatment, and outcome of 22 patients from a single-institution experience. A retrospective analysis of patients treated for ECs and DCs of the head and neck over a 12-year period was performed. The present study included 22 patients (male/female ratio 1:1). The mean age of presentation was 11.68 years. The lesions were distributed in the orbital regions in 7 (31.82%) patients, auricular regions in 6 (27.27%), neck regions in 5 (22.73%), floor of the mouth in 3 (13.64%), and nose in 1 (4.55%). Complete surgical excision was performed as a definitive treatment method in 21 patients (95.45%). The mean size of the excised lesions was 21.36 mm at the widest length (range: 10-70 mm). On the basis of histopathological examinations, 15 (71.43%) lesions were classified as ECs and 6 (28.57%) as DCs. Post-operative complications were noted in 3 (14.29%) patients--2 (9.52%) with recurrences and 1 (4.76%) with hypertrophic scarring. All of these patients were successfully cured after a second surgery. The ECs and DCs of the head and neck present an interesting diagnostic and therapeutic challenge. Successful management depends on a thorough knowledge of their clinical and radiological features.

Cranial polyneuropathy caused by herpes zoster infection: a retrospective single-center analysis.

PURPOSE: Cranial polyneuropathy (CP) is a rare complication of herpes zoster (HZ) infection. This entity often produces situations of a diagnostic dilemma, as can be seen in a wide spectrum of clinical presentations. The aim of this study was to report the clinical characteristics, treatment, and outcomes of 11 patients from a single-institution experience. METHODS: A retrospective analysis of patients treated for HZ CP over a 12-year period was performed. RESULTS: The present study included 11 patients with CP caused by HZ infection-7 (63.63%) females, and 4 (36.36%) males. The mean age at presentation was 63 years (range, 38-85 years). Cranial nerve VII was affected in nine (81.82%) cases, CN VIII in six (54.55%) cases, CN V in five (45.45%) cases, CN III and IX in two (18.18%) cases, and CN VI and X in one (9.09%) case. The treatment of choice was acyclovir in all patients, while corticosteroids were administered in six (54.55%) patients. Complete CN recovery was observed in seven (63.63%) patients, while four (36.36%) patients suffered from permanent CN damage-two (18.18%) CN VII, one (9.09%) CN VII and VIII, and one (9.09%) CN VI. CONCLUSION: Herpes zoster CP presents an interesting diagnostic and therapeutic challenge. Successful management of these patients depends on a thorough knowledge of the anatomy and topodiagnostic of CNs. Early administration of antiviral agents is crucial in terms of responsiveness to treatment and expedite recovery.

Comorbidity of Chronic Tinnitus and Psychological Stress - Which Came First, the Chicken or the Egg?

Subjective tinnitus is a frequent, debilitating hearing disorder causing severe emotional stress and psychological suffering. Likewise, many reports show that the onset of tinnitus occurs at the time of high stress or after a period of stress. It is also common for existing tinnitus to become worse during exposure to stress. However, in clinical practice the association between tinnitus and stress is often neglected. Extensive search of the Web of Science database has shown a low ratio of scientific articles about coexistence of stress and tinnitus compared to other stress-related conditions. Specifically, there are about sixteen times more articles investigating comorbid stress in chronic pain, about six times more in chronic fatigue, and about four times more in fibromyalgia. Previous studies of biological markers of stress in tinnitus patients showed normal diurnal levels of stress hormone cortisol. However, experimental studies of tinnitus subjects showed a blunted reactive cortisol response after a psychosocial stress test, exposure to noise in the laboratory and a dexamethasone suppression test. In addition, tinnitus subjects showed increased sympathetic tone, and weakened sympathetic response after exposure to mental arithmetic task. In tinnitus subjects oxidative metabolism shows imbalance with shift from antioxidant enzyme preponderance towards oxidative stress predominance. Relaxation therapeutic programs reduce stress-sensitive immunological parameter tumor necrosis factor alpha. Although existing data indisputably proves existence of comprehensive connections between tinnitus and psychological stress, there is still no empirical evidence to show whether stress as a etiological, or just contributing factor. Further research should give the ultimate answer on this subject.

The trends of human dirofilariasis in Croatia: Yesterday - Today - Tomorrow.

INTRODUCTION: Human dirofilariasis is a disease historically linked to the Mediterranean area. For the last few decades, however, Dirofilaria nematodes have been spreading, both in terms of prevalence and the geographical expansion in non-endemic areas. Currently, cases of human dirofilariasis are recorded in more than 40 countries worldwide. Croatia is considered an endemic area of the Adriatic basin. METHODS: In a nationwide investigation, new and previously published cases of human dirofilariasis in Croatia were analyzed. RESULTS: Since 1996, 30 cases of human dirofilariosis were reported in Croatia. A total of 14 (46,67%) cases were from the coastal and 16 (53,33%) from continental regions of the country. Based on anatomical location, 13 (43,33%) cases were subcutaneous, 12 (40%) were ocular and five (16,67%) occurred in the reproductive organs. In all 30 cases, Dirofilaria repens was identified as the causative agent. CONCLUSIONS: An increase in air temperature as climate change, changes in mosquito fauna, high prevalence of D. repens in dogs and limited use of chemoprophylaxis are possible risk factors for Dirofilaria infection in the Croatian population. Since reporting to epidemiological services is not mandatory in this country, the real number of human dirofilariasis cases is probably significantly higher than published. This emphasizes the need for mandatory reporting of human cases and surveillance of Dirofilaria infection in dogs and mosquitoes in Croatia, following the "One Health" concept.

Human ophthalmomyiasis caused by Oestrus ovis-first report from Croatia and review on cases from Mediterranean countries.

Oestrus ovis is the most common cause of human ophthalmomyiasis. So far, majority of ophthalmomyiasis cases have been reported from Mediterranean countries, but not from Croatia. In current study, we present first two cases of human ophthalmomyiasis in Croatia, caused by O. ovis larvae. Reviewing a PubMed database, additional 259 cases of human ophthalmomyiasis in countries of Mediterranean basin have been reported. A total of 260 (99.62%) cases had external, while 1 (0.38%) had internal form of ocular myiasis. In all cases, O. ovis larvae were identified as the causative agent. O. ovis infestation is usually reported in shepherds and farmers although there is a high prevalence of infection in urban areas as well. Various climatic factors influence O. ovis larvipositional activity. Air temperature is the most important factor affecting O. ovis larviposition, while humidity, wind speed, and time of the day play only a moderate role. Most common symptoms of ophthalmomyiasis are irritation and redness, and in more than half of cases infestation is multiple. Ophthalmomyiasis interna is eye-compromising condition. Since there is reduced awareness among patients and medical professionals, the real number of ophthalmomyiasis cases is probably significantly higher than published. Global warming predisposes future increase of O. ovis prevalence in humans, which emphasizes the need for mandatory reporting and surveillance of disease.