Deep Orbital Dermoid Cyst Bulging into the Superior Orbital Fissure: Clinical Presentation and Management

Complex presentation of a left Fronto-zygomatic Dermoid cyst; a case report

We present a case of craniofacial dermoid cyst in a 50-year-old female. The patient's complaint was persistent refractory headaches with no other significant neurological symptoms. Diagnostic imaging revealed the presence of a lesion in the left fronto-zygomatic region. Surgical intervention involved a craniotomy that led to a successful excision of the dermoid cyst. The diagnosis was subsequently confirmed by histopathological analysis. This case underscored the importance of considering DC as a potential diagnosis for any craniofacial lesion, given their diverse presentations and associated complications.

Differentiating intradiploic orbital dermoid and epidermoid cysts utilizing clinical features and machine learning

Purpose

The purpose of this study was to characterize intradiploic dermoid and epidermoid orbital cysts to determine any differences in clinical, radiographic, or surgical features.

Methods

A retrospective review was performed of patients presenting with intradiplopic dermoid or epidermoid cysts. Additionally, a complete review of the literature was performed to identify cases of intradiplopic orbital dermoid and epidermoid cysts. Data collected included age, sex, presenting symptoms, location of intradiplopic cyst, ophthalmic findings, treatment, and follow-up. Clinical features of dermoid versus epidermoid cyst were compared. Additionally, machine-learning algorithms were developed to predict histopathology based on clinical features.

Results

There were 55 cases of orbital intradiploic cysts, 49 from literature review and six from our cohort. Approximately 31% had dermoid and 69% had epidermoid histopathology. Average age of patients with dermoid cysts was significantly lesser than that of patients with epidermoid cysts (23 vs. 35 years, respectively; P = 0.048). There was no difference between sex predilection, presenting symptoms, radiographic findings, or surgical treatment of dermoids and epidermoids. The majority of patients (64%) underwent craniotomy for surgical removal. Machine-learning algorithms KStar and Neural Network were able to distinguish dermoid from epidermoid with accuracies of 76.3% and 69%, respectively.

Conclusion

Orbital intradiploic cysts are more commonly epidermoid in origin. Dermoid cysts presented in younger patients; however, there were no other significant differences in features including ophthalmic or radiographic findings. Despite similar features, machine learning was able to identify dermoid versus epidermoid with good accuracy. Future studies may examine the role of machine learning for clinical guidance as well as new surgical options for intervention.

Dermoid Cyst: Outcome Analysis in a Pediatric Referral Hospital

PURPOSE

To describe the management of dermoid cysts in a pediatric referral hospital.

METHODS

Retrospective review of 115 patients with pathological diagnosis of dermoid cyst in a pediatric referral hospital between 2003 and 2019.

RESULTS

One hundred fifteen patients, 51 (44.3%) males, and 64 (55.7%) females were retrospectively reviewed. There were fifty-one (44.3%) right eyes and 64 (55.7%) left eyes. Mean age at surgery was 39.15 months (5.6 months-16.4 years). One hundred four (90.4%) lesions were superficial, and 11 (9.6%) were deep. Quadrant location was 63 (54.8%) superior-temporal, 45 (39.1%) superior-nasal, 4 (3.5%) inferior-temporal, and 2 (1.7%) in the nasal inferior quadrant. Most patients only had aesthetic concerns, but 3 (2.61%) showed lacrimal drainage obstruction symptoms, 2 (1.74%) had proptosis, and 1 case spontaneously drained to the cutaneous surface. Imaging was performed in 51 (44.3%) patients. Regarding to their radiodensity, 71.9% had low density content, 28.1% high density, and only 1 patient showed full liquid content; 10.9% showed heterogeneous content; 53.1% showed bone remodeling. Every patient but 1 underwent surgery for a barely accessible asymptomatic retrobulbar cyst. Nine cysts (7.8%) were breached during surgery. Three recurrences were found (2.6%), but only 1 was related to intraoperative breach.

CONCLUSIONS

Dermoid cysts are the most common benign periorbital tumors in the pediatric population. Imaging is required for evaluation of lesions in atypical locations, deep or fixed to underlying tissue. Surgical removal is the gold standard of treatment. Multidisciplinary approach may be required in the most complex cases. After surgery, few complications and recurrences were found in our series.

[Imaging of orbital tumors in children]

Orbital tumors in children are characterised by a wide histological diversity due to the architectural complexity of the orbit. Several classifications may be proposed according to their location, histologic type and malignant or benign character. The most common clinical manifestation is the leukocoria. Diagnostic delay of these tumors, even if they are benign, may affect prognosis and lead to a loss of vision and/or a morphological deformation. Imaging plays an important role in positive diagnosis, in the differentiation between benign processes and potentially malignant processes, in the assessment of local and loco-regional staging and in follow-up monitoring under treatment. This study aimed to highlight the radiological features of primary intra-orbital tumors in children which are, in general, different from those of adults, by conducting a retrospective study of 40 medical records whose data were collected in the Division of Pediatric Radiology at the Mohammed VI University Hospital in Marrakech, Morocco over a period of 4 years (2014-2017).