[Our experience in the treatment of congenital nasal median heterotopias in children and an overview of various treatment tactics]. / Nash opyt lecheniya vrozhdennykh nazal'nykh sredinnykh geterotopii u detei i obzor taktik lecheniya.

Dermoid nasal cysts (congenital nasal median heterotopias) are a rare congenital pathology in children. OBJECTIVE: Yo consider the clinical picture, methods of radiation diagnosis and to study the surgical results of a dermoid cyst of the nose according to the literature. MATERIALS AND METHODS: A retrospective review of medical histories with the diagnosis of "Dermoid cyst of the back of the nose and nasal cavity, epidermal cyst of the back of the nose, glioma, encephalocele" was conducted from 2017 to 2022 in the Pediatric Otorhinolaryngological Department of the National Medical Research Center for Otorhinolaryngology of the Federal Medical-Biological Agency of Russia. The case histories were analyzed by the nature of the lesion, the imaging techniques performed, the course of the operation and the results obtained. MATERIAL AND METHODS: A total of 16 medical histories were analyzed, the average age was 4.5 years (range 10 months - 15 years), over the past 5 years with a diagnosis of "Dermoid cyst of the nasal dorsum and nasal cavity, glioma, epidermal cyst of the nasal dorsum, encephalocele". All patients underwent magnetic resonance imaging (MRI) in the preoperative period, 14 patients also underwent computed tomography (CT). RESULT: Of these, 7 had a confirmed dermoid cyst with a fistula, 3 patients without a fistula, 3 patients had glioma, and 1 had encephalocele, 2 patients had an epidermoid cyst. A fistulous opening of the dermoid cyst of the nasal dorsum and nasal cavity was observed in the upper third of the nasal dorsum in 3 children, in the middle third in 2 patients and in the lower third in 2 children. The article presents a scheme for the characteristics of the lesion and the tactics of surgical treatment in comparison with the data of foreign authors. Intraoperatively, intracranial spread occurred in 6 patients. Various surgical approaches for intracranial proliferation and a corresponding literature review are also presented. Catamnestic follow-up ranged from 1 to 5 years (on average, 3.5 years), no relapses or postoperative complications were noted. CONCLUSION: Nasal median heterotopias are a rare congenital anomaly. Preoperative preparation should include CT and MRI to assess the lesion and exclude intracranial spread. The surgical approach depended directly on the localization of heterotopia and its spread. All patients had a good cosmetic result after the surgical treatment performed by us according to the author's method.

Pädiatrische Rhinologie. / Pädiatrische Rhinologie.

The following review article highlights key topics in pediatric rhinology that are currently the focus in research and at conferences as well as in the interdisciplinary discussion between otorhinolaryngologists and pediatricians. In particular, congenital malformations such as choanal atresia or nasal dermoid cysts are discussed, followed by statements on the current procedures for sinogenic orbital complications as well as on the diagnosis and therapy of chronic rhinosinusitis in children. Furthermore, updates on the role of the ENT specialist in the care for children with cystic fibrosis and primary ciliary dyskinesia are provided.

Atypical dermoid cyst of the corpus callosum: a case report.

BACKGROUND: Intracranial dermoid cysts (DCs) represent an infrequent subset of congenital ectodermal inclusion cysts predominantly observed near the midline structures. In spite of their benign nature, they can cause clinical manifestations, necessitating surgical removal as the main therapeutic measure. CASE REPORT: We present here an extremely rare case characterized by a radiologically atypical dermoid cyst located within the corpus callosum, an extremely rare location for such tumors. Successful surgical excision resulted in good clinical outcomes. CONCLUSIONS: This paper underscores the importance of a timely, proper radiological diagnostic process, which sees magnetic resonance imaging (MRI) as the main step, as well as the fact that interpretation of MRI data can sometimes be challenging, as it was in the patient of this report.

Protracted Chemical Peritonitis Following Laparoscopy for Dermoid Cyst: A management dilemma.

Dermoid cysts are common benign ovarian tumours arising from totipotent germ cells. We report a rare case of chemical peritonitis and prolonged fever following laparoscopic salpingo-oophorectomy for torsion of a large ovarian dermoid and discuss the management of this patient with prolonged hospital stay, antibiotics and anti-inflammatory use, repeated drainage of the collection as well as re-laparotomy. The occurrence of this rare condition can be extremely distressing for the patient and treating surgeon alike, as the recommendations for management are limited. The management of chemical peritonitis may require one or more surgical procedures along with prolonged anti-inflammatory therapy.

Endoscopy-assisted excision of nasoglabellar dermoid cyst.

OBJECTIVE: To assess the endoscopic assisted excision of the nasoorbital dermaoid cyst. DESIGH: Case series. SETTING: Zagazig univesity hospitals. PARTICPANT: The study included patients with nasal dermoid who were operated using a local vertical incision with endoscopic assisted dissection and excision. MAIN OUTCOME MEASURES: Complete removal, complication, recurrence. RESULTS: In all patients, complete excision of the cyst was achieved with negligable blood loss. No recurrence was detected throughout the follow up. CONCLUSION: Endoscopic-assisted resection of the nasal dermoid cyst appears a safe and effective approach with small incision, precise dissection and satisfactory apparent scar with with low incidence of recurrence.

[Removal of a dermoid cyst of the floor of the mouth in a patient with severe hemophilia A]. / Udalenie dermoidnoi kisty dna rta u bol'nogo tyazheloi formoi gemofilii A.

The article presents a case of a surgical treatment of removing a dermoid cyst of the floor of the oral cavity in a patient with severe hemophilia A. A detailed analysis was carried out of the surgical operation, postoperative management, coagulation factor replacement therapy and accompanying therapy, as well as the features of anesthesia, which allowed a surgical intervention without any hemorrhagic and infectious complications.

What is the annual risk of infection in congenital midline neck cysts in children? Thyroglossal duct cysts versus dermoid cysts.

INTRODUCTION: Midline neck lumps in children are mostly found to be thyroglossal duct cysts or dermoid cysts. Thyroglossal duct cysts often have an associated sinus tract which may connect all the way to the foramen caecum on the tongue, while dermoids have no such connection. This study aims to estimate the annual infection risk for midline neck cysts based on our patient series, and to see if this differs between thyroglossal duct cysts and dermoid cysts. METHODS: All children seen at the Royal Hospital for Children, Glasgow who underwent surgical excision of a midline neck cyst between 1st January 2017 and 31st December 2021 were identified. In those whose cyst had been infected prior to surgical excision, the age at which the first episode of infection occurred was recorded and used to calculate a survival curve. RESULTS: We identified 53 children (29 male, 24 female) aged 1-16 years (median 4) at the time of surgical excision. There were 26 thyroglossal and 24 dermoid cysts, plus 2 with indeterminate histology and 1 lymph node. Of the 24 dermoids, 4 suffered infection prior to surgery (17%), and 2 of these recurred after surgery (8%). Of the 26 thyroglossal cysts, 16 suffered infection prior to surgery (62%) and 5 of these recurred (19%). 78% of thyroglossal and dermoid cysts had at least 1 episode of infection by age 10 years. DISCUSSION: In a child with a congenital midline neck cyst that has never been infected, deferring surgery for a year comes with a 7.8% risk that the cyst will get infected.

Late-onset rupture of an intracranial dermoid cyst: a case report.

BACKGROUND: Dermoid cysts are developmental abnormalities occurring between the third and fifth week of embryogenesis. These lesions can initially develop as intracranial or extracranial and persist throughout the patient's lifetime. While generally benign, their symptoms can be due to mass effect or local irritation secondary to rupture and release of contents, typically presenting as headaches and seizures. Intracranial dermoid cysts are rare and comprise less than 1% of all intracranial lesions, with rupture occurring approximately 0.18% of the time. CASE PRESENTATION: Our case describes a 42-year-old Hispanic female with a late-onset rupture of an intracranial dermoid cyst with associated new onset seizures. She underwent uncomplicated neurosurgical resection with mesh placement and was scheduled to follow-up as an outpatient. CONCLUSION: To avoid rupture and associated sequelae in future patients, we recommend considering a more invasive approach as the initial strategy if internal cysts are relatively accessible.

A feline spinal dermoid cyst treated with surgical intervention.

A 5-year-old neutered female mixed cat presented with reduced activity and ataxia of the hind limbs. Computed tomography and magnetic resonance imaging revealed an extradural mass compressing the spinal cord on the dorsal aspects from the 7th to 8th thoracic vertebra. Dorsal laminectomy was performed on the 7-8th thoracic vertebra and the cyst was totally removed, giving full resolution of the clinical signs. The cyst was diagnosed as a dermoid cyst. To our knowledge, this is the first report of feline dermoid cyst compressing the spinal cord that was diagnosed antemortem. The prognosis is favorable when the cyst is completely resected.

Type I and type IV dermoid sinus with associated cervical spina bifida in a Labrador Retriever mixed breed dog.

A 6-month-old female Labrador Retriever mix rescued by a local shelter developed respiratory distress and later became tetraplegic. After transferring to a specialty centre, diagnostic imaging (CT and MRI) revealed spina bifida at C3 and dermoid sinuses at the level of C3 and T1. Surgery was performed to remove the dermoid sinuses. The dog was placed on broad-spectrum antibiotics and a tapering anti-inflammatory dose of prednisone, postoperatively. Independent ambulation was regained within 14 days with no recurrence of neurologic clinical signs.

Preoperative Imaging and Surgical Findings in Pediatric Frontonasal Dermoids.

OBJECTIVE: To review cases of congenital frontonasal dermoids to gain insight into the accuracy of preoperative computed tomography (CT) and magnetic resonance imaging (MRI) in predicting intracranial extension. METHODS: This retrospective study included all patients who underwent primary excision of frontonasal dermoids at an academic children's hospital over a 23-year period. Preoperative presentation, imaging, and operative findings were reviewed. Receiver operating characteristic (ROC) statistics were generated to determine CT and MRI accuracy in detecting intracranial extension. RESULTS: Search queries yielded 129 patients who underwent surgical removal of frontonasal dermoids over the study period with an average age of presentation of 12 months. Preoperative imaging was performed on 122 patients, with 19 patients receiving both CT and MRI. CT and MRI were concordant in the prediction of intracranial extension in 18 out of 19 patients. Intraoperatively, intracranial extension requiring craniotomy was seen in 11 patients (8.5%). CT was 87.5% sensitive and 97.4% specific for predicting intracranial extension with an ROC of 0.925 (95% CI [0.801, 1]), whereas MRI was 60.0% sensitive and 97.8% specific with an ROC of 0.789 (95% CI [0.627, 0.950]). CONCLUSION: This is the largest case series in the literature describing a single institution's experience with frontonasal dermoids. Intracranial extension is rare and few patients required craniotomy in our series. CT and MRI have comparable accuracy at detecting intracranial extension. Single-modality imaging is recommended preoperatively in the absence of other clinical indications. LEVEL OF EVIDENCE: 4 Laryngoscope, 134:1961-1966, 2024.

Intrasellar Dermoid Cyst: Case Report of a Rare Lesion and Systematic Literature Review Comparing Intrasellar, Suprasellar, and Parasellar Locations.

OBJECTIVE: Intracranial dermoid cyst (DC) is a rare benign, slow-growing lesion, most commonly arising along the midline. They can occur in the supratentorial compartment, very rarely involve the sellar region and only exceptionally are intrasellar. The aim of our study is to address the challenges in the diagnosis and management of sellar DCs. METHODS: We performed a systematic review of sellar DCs, in keeping with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, and described an intrasellar DC in a 32-year-old female who presented with bilateral blurring vision. RESULTS: The review identified 4 intrasellar, 29 suprasellar, and 28 parasellar cases. Intrasellar DCs more likely present with progressive visual impairment and pituitary hormone dysfunctions during the fifth decade of life. Suprasellar and parasellar DCs are typically diagnosed during the third decade of life because of diplopia, ptosis, trigeminal hypoaesthesia/para-esthesia or cyst's rupture. Sellar DCs are typically hypodense on computed tomography scans and contain calcifications. Magnetic resonance imaging features include T1 hyperintensity, T2 heterogeneous intensity, no restriction on diffusion-weighted images, and no contrast enhancement. Surgery is the treatment of choice. Gross total resection is achieved in 60% of intrasellar and 61.9% of suprasellar and parasellar DCs. Early postoperative complications are reported in 40.0%, 16.7%, and 23.8% of intrasellar, suprasellar, and parasellar DCs, respectively. CONCLUSIONS: Intrasellar DCs are rare lesions typically diagnosed later than suprasellar and parasellar DCs due to their different clinical presentations. However, they should be considered in the differential diagnosis of cystic lesions of the sella, including epidermoid cysts, craniopharyngiomas, Rathke's cleft cysts, and teratomas.

Operative options for extracranial nasal dermoid cysts: A meta-analysis.

BACKGROUND: Nasal dermoid cysts are surgically treated using external incision, open rhinoplasty, transnasal endoscopy, or combined approaches. It is unclear how these approaches differ with regard to the incidence of adverse events. METHODS: We conducted a systematic review of studies on the surgical management of midline nasal dermoids. Following data abstraction, we carried out a series of single-arm meta-analyses to estimate summary risks of recurrence and combined adverse events (recurrence, revision, infection, or readmission) according to the surgical approach. RESULTS: Forty-three eligible studies published between 1958 and 2020 reported on 439 cases of nasal dermoid cysts. Treatment approaches included external incision (25 studies), rhinoplasty (15 studies), and transnasal endoscopy (5 studies). To our knowledge, no study has compared outcome incidence between the surgical approaches. External incision had the lowest summary incidence of both recurrence (1.78% [95% CI: 0.57%, 3.65%]) and combined adverse events (4.94% [95% CI: 2.72%, 7.77%]). Rhinoplasty had a higher incidence of recurrence (4.81% [95% CI: 0.91%, 11.6%]) and combined adverse events (8.32% [95% CI: 2.77%, 16.5%]), and transnasal endoscopy had the highest incidence of recurrence (the only reported adverse event; 7.89% [95% CI: 0%, 28.9%]). CONCLUSION: Our results suggest that the incidence of adverse events was lowest among patients who were subjected to external incision for nasal dermoid removal. Incidence was higher for patients who underwent rhinoplasty and the highest for patients who underwent transnasal endoscopy. Future work on this topic should include well-designed prospective studies that compare rates of adverse events and cosmetic outcomes between surgical approaches.

Prevalence of thyroid gland tissue in midline neck dermoid cysts in children and a proposed new 'thyroglossal entrainment' hypothesis for their formation.

BACKGROUND: Thyroglossal duct cysts and dermoid cysts both commonly present as midline neck lumps in children. They are treated as separate entities with different embryological origins. There are isolated reports of thyroid gland tissue in a dermoid cyst, concurrent thyroglossal and dermoid cysts, and cysts with mixed histology. It is not known if these are rare or common. METHODS: All children undergoing excision of a congenital midline neck cyst between January 2017 and December 2022 were identified. Histopathology slides were reviewed in detail. RESULTS: In 53 children, there were 26 thyroglossal duct cysts, 24 dermoids, 1 lymph node and 2 with no diagnostic material identified. Five dermoids (28 per cent) had associated thyroid gland tissue, and 1 (4 per cent) had hybrid histology with keratinising and respiratory epithelium. Infection occurred in 17 per cent of dermoids prior to excision and 8 per cent of dermoids recurred after excision. CONCLUSION: Hybrid histology, infection and recurrence are all common in midline neck dermoids. A new theory for their embryological origin is proposed, with the suggestion that some may need more extensive surgery.

Clinicopathologic analysis of oral dermoid and epidermoid cysts: a Brazilian multicenter study.

Dermoid cysts (DCs) and epidermoid cysts (ECs) are uncommon developmental cysts affecting the oral cavity. This study aims to evaluate patients with oral DCs and ECs and their demographic and clinicopathologic features. A retrospective descriptive cross-sectional study was performed. A total of 105,077 biopsy records of oral and maxillofacial lesions from seven Brazilian oral pathology centers were analyzed. All cases diagnosed as oral DCs and ECs were reviewed, and clinical, demographic, and histopathological data were collected. The series comprised 32 DCs (31.4%) and 70 ECs (68.6%). Most of the DCs occurred on the floor of the mouth (n = 14; 45.2%) of women (n = 17; 53.1%) with a mean age of 34.6 ± 21.6 years. All DCs were lined partially or entirely by stratified squamous epithelium (100%). Chronic inflammatory cells, melanin pigmentation, multinucleated giant cell reaction, and cholesterol clefts were observed in the fibrous capsule . Most of the ECs affected the labial mucosa (n = 20; 31.7%) of men (n = 39; 56.5%) with a mean age of 48.0±19.8 years. Microscopically, most ECs (n = 68; 97.1%) were lined entirely by stratified squamous epithelium. Two cysts (2.9%) showed areas of respiratory metaplasia. Chronic inflammatory cells, melanin pigmentation, multinucleated giant cell reaction, and cholesterol clefts were also observed in the fibrous capsule. Conservative surgical excision was the treatment of choice in all cases. Oral DCs and ECs are uncommon and often clinically misdiagnosed lesions. Clinicians should consider DCs and ECs in the differential diagnosis of soft tissue lesions in the oral cavity, mainly located on the floor of the mouth and labial mucosa.

Bilateral orbital dermoid cysts: A case report.

Dermoid cysts are one of the most common benign orbital tumours in children and usually occur unilaterally. Bilateral dermoid cysts in the orbit are rare. We report here, a case of bilateral orbital dermoid cysts, in a 29-month-old baby girl. The patient's prognosis was favourable following surgical resection. Through this case report, we hope to increase the recognition and understanding of this condition.

Spontaneous recovery of underlying bony erosion following surgical removal of craniofacial dermoid cysts in periatric patients: A prospective study.

This study aimed to evaluate the spontaneous recovery of bone deformity after surgical excision of craniofacial dermoid cysts in pediatrics. Pediatric patients who underwent excision of a dermoid cyst were included in the study. A prospective analysis was conducted to evaluate the amount of bone recovery by comparing the depth of bony concavity in the preoperative and postoperative (6 months) ultrasonography. In 145 of 187 patients with preoperative imaging available, the mean size of dermoid cysts was 1.4 cm3 (range, 0.1 to 9.5), and 41.4% (60/145 cases) showed cranial bone depression. In the comparison of preoperative and postoperative ultrasonography of 30 patients, the mean depth of bony cavity decreased significantly from 4.0 to 0.9 mm (p<0.001) after a mean of 6.7 months postoperatively. There was 13.3% (4/30) of mild (≤2.0 mm), 40.0% (12/30) of moderate (>2.0 to ≤4.0 mm), and 46.7% (14/30) of severe (>4.0 mm) depression, and the concavity depth significantly decreased in all groups (p = 0.028, mild; p<0.001, moderate; p<0.001 severe). Within the limitations of the study it seems that significant recovery of cranial bone depression does take place within 6 months after excision of craniofacial dermoid cysts in pediatric patients, saving the need for immediate reconstruction.

Surgical management of a dermoid cyst with mandibular gland tissue in a Japanese Black calf.

A 131-day-old male Japanese Black calf presented with a swollen right cheek from birth. Imaging examination revealed a cyst under the right buccal area and debris-containing fluid inside the cyst, and puncture aspiration revealed a mildly cloudy fluid containing hair and tissue fragments. Histological examination of the excised cyst revealed stratified squamous epithelium with skin appendages in the cyst wall, which was diagnosed as a dermoid cyst. In addition, some submandibular gland tissue was found within the cyst wall. After removal of the cyst, there was swelling in the same area, which resolved with steroid administration. Surgical treatment of buccal dermoid cysts should be performed with caution to avoid damage to adjacent salivary gland tissue.