Case Of Cyst Research Articles

Post-laparoscopy Epidermal Inclusion Cyst of Umbilicus

Background: Epidermal inclusion cysts can develop in the umbilicus following trauma or surgery. In this study, we aim to report cases of epidermal inclusion cysts occurring at the umbilicus in patients with a history of previous laparoscopic surgery.Methods: A retrospective study was conducted between January 2020 and May 2023 based on the medical records of patients who developed epidermal inclusion cysts in the umbilicus following laparoscopic surgery. Information regarding age, sex, symptoms, type of previous surgery, time elapsed from previous surgery to mass discovery, and postoperative complications was collected from a total of 15 patients.Results: Out of the 15 patients, 13 were female (86.7%) and two were male (13.3%). Symptoms such as discharge, redness, and tenderness were present in 12 patients (80.0%). Obstetric and gynecologic laparoscopic surgeries were performed on 10 patients (66.7%), whereas general surgical laparoscopic surgeries were performed on five patients (33.3%). The mean time from laparoscopic surgery to discovery of the umbilical mass was 43.5 months. Wound dehiscence occurred in one patient (6.7%) and seroma developed in another patient (6.7%) out of 15 patients.Conclusion: Achieving an ideal shape of the umbilicus after removal of epidermal inclusion cysts that occur at the umbilicus following laparoscopic procedures requires significant effort. Through this study, we aim to remind laparoscopic surgeons that epidermal inclusion cysts can develop at the umbilicus through laparoscopic interventions and thereby emphasize the importance of proper wound management.

지방종으로 오인된 이개측두부 유피낭종 1예

A dermoid cyst is an unusual congenital anomaly that is lined by squamous epithelium and contains skin adnexal structures, such as sebaceous glands and hair follicles. Only a few cases of dermoid cysts have been reported to occur around the auricle and several benign tumors should be considered in the differential diagnosis. In this article, the authors have experienced a 12-year-old female with the congenital painless mass at the left auriculotemporal area. The computed tomography showed a low-contrast enhancing mass similar to adipose tissue. The lesion was considered as a lipoma until we observed the skin adnexal structures when it ruptured intraoperatively. Although benign tumors are rarely involved in the auriculotemporal area, presenting without symptoms, it is recommended of complete excision to prevent the possibility of malignancy, recurrence, or infection. Thus, we report a very rare case of a dermoid cyst of the auriculotemporal area with the literature review.

Management of rare atlantoaxial synovial cyst case with extension to the cerebellopontine angle: illustrative case.

Synovial cysts are a common finding in degenerative spine disease, most frequently involving the facet joints of the lumbar spine. Synovial cysts are less common in the cervical spine and rarely involve the atlantoaxial junction. In this case report, the authors detail a unique presentation of a left atlantoaxial synovial cyst with large intracranial extension into the cerebellopontine angle causing progressive cranial nerve palsies resulting in tinnitus, vertigo, diminished hearing, gait imbalance, left trigeminal hypesthesia, left facial weakness, and dysarthria. The patient underwent a retromastoid craniectomy for resection of the synovial cyst, resulting in improvement and resolution of symptoms. Follow-up occurred at 6 weeks, 3 months, and 5 months postoperatively without recurrence on imaging. The authors describe acute and long-term management of a unique presentation of an atlantoaxial synovial cyst including retromastoid craniectomy, intervals for follow-up for recurrence, and possible treatment options in cases of recurrence. A systematic literature review was also performed to explore all reported cases of craniocervical junction synovial cysts and subsequent surgical management.

Assessment of Matrix Metalloprotease – 7 (MMP7) Immunohistochemistry in Biliary Atresia and Other Pediatric Cholestatic Liver Diseases

Background and aims: Biliary atresia (BA) is a progressive fibro-obliterative cholangiopathy. The histopathological diagnosis is often challenging and an immunohistochemical marker is often sought as an adjunct. We evaluated MMP7 immunohistochemistry in BA and other non-BA pediatric cholestatic liver diseases. Materials and methods: MMP7 immunohistochemistry was applied in 5 age-matched normal control, 23 cases of BA and 43 cases of non-BA pediatric cholestasis including 16 cases of choledochal cyst (CC), and a multiplication score was obtained by multiplying the intensity and percentage positivity in the cholangiocytes. Results: BA showed a high mean MMP7 multiplication score which was significantly different from the normal control and other non-BA pediatric cholestatic diseases including CC (p value < 0.001). The sensitivity, specificity, positive, and negative predictive values of MMP7 immunohistochemistry were 91.3%, 93.02%, 87.5%, and 95.2% respectively. Conclusion: MMP7 immunohistochemistry may be an adjunct to histomorphology in BA.

EMPIRICAL VERIFICATION OF THE STRUCTURAL MODEL RELATING EQUILIBRIUM VALUES OF COSTS, QUALITY, AND COMFORT OF MEDICAL SERVICES WITH INDIVIDUALIZED ELASTICITIES OF DEMAND

The healthcare system in Ukraine is moving to flexible mechanisms to support the quality and comfort of medical services, in particular through the introduction of co-payments. The following necessitates the development of theoretical background and econometric models to support the process evaluation and optimization.&#x0D; Aim. The research aims at performing empirical verification of the structural model relating equilibrium values of costs, quality, and comfort of medical services with individualized elasticities of demand.&#x0D; Material and Methods. We have performed a combined (retrospective + prospective) study of the cases of uterine fibroids and/or ovarian cysts treated surgically in three city gynecological hospitals/centers in Vinnytsia, Ukraine. An econometric model of D. Dranove and M. Satterthwaite was used as the theoretical basis, the one that describes the dynamic equilibrium of cost, quality, and comfort of medical services together with demand elasticities. Importantly, the system of structural equations models joins moves of equilibrium of the price, quality, and comfort of medical services given shifts in the elasticities of demand. This is of use to analyze factors of efficiency and responsiveness to the demand of health care provision. Unfortunately, we did not find any practical use of this promising theoretical model, possibly due to the lack of empirical verification.&#x0D; Results and Disscusion. Therefore, we analyzed 150 case histories of women with uterine fibroids and/or ovarian cysts treated surgically. The data on the costs, quality, and comfort of inpatient care are studied to enable empirical verification of the model. The modern Monte Carlo Markov Chain (МСМС) methods of structural modeling and power analysis were used to estimate the required sample size.&#x0D; Conclussion. As a result of the study, the system of structural equations accompanying the theoretical model has been empirically verified for the first time and proved to be valid for ascertaining rational ways to optimize inpatient servicing of women with given gynecological pathology, in particular through the management of demand elasticities.

Epidermal inclusion cyst after uneventful small incision cataract surgery: A diagnostic dilemma

Conjunctival cysts are not so uncommon after surgical procedures. They are usually benign in nature and are filled with serous material and mucous. They may be congenital or acquired in origin. Acquired cysts are mostly seen after ocular surgery and trauma. Hereby, we report two cases of conjunctival inclusion cysts following uneventful manual small incision cataract surgery in two elderly females. Both cases were treated by cyst excision and suturing of the scleral tunnel with interrupted sutures was done. An unstable scleral wound may be a contributory factor in the formation of cysts. Hence, we conclude that closure of the scleral tunnel with overlying tenon and conjunctival apposition is a critical step in controlling such complications of cataract surgery.

Dorsal root entry zone fenestration for intramedullary ependymal cyst: illustrative case.

Intramedullary ependymal cysts are rare and difficult to distinguish from syringomyelia and neuroenteric cysts. Almost all cases in the literature have been case reports and have been performed with the traditional posterior median sulcus incision, which is difficult to identify accurately during spinal rotation. Approximately 40% of cases have transient neurological deterioration. The dorsal root entry zone has been proven to be an effective incision area in the treatment of intramedullary lesions, but so far, its utilization in intramedullary ependymal cysts has been rarely reported. This study is the first to report on six cases of intramedullary ependymal cysts treated with an 8-mm incision in the dorsal root entry zone to fully establish the communication between the cyst and the subarachnoid space. Imaging changes and neurological improvement were analyzed in all cases before and after surgery and were followed up for 49.7 months. The utilization of dorsal root entry zone fenestration in intramedullary ependymal cyst has demonstrated feasibility and effectiveness, ensuring the functional integrity of the posterior column.

“Bunch of Grapes”: A Case of Innumerable Endometriotic Cysts

“Bunch of Grapes”: A Case of Innumerable Endometriotic Cysts

A case of infundibular cyst with neutrophil cannibalism by squamous cells in a dog

A 6-years and 6-months-old, neutered male mongrel dog had a skin mass between the left eye and nose. Fine needle aspiration biopsy of the mass revealed giant epithelial cells containing many neutrophils in the cytoplasm. The mass was excised and histopathologically diagnosed as an infundibular cyst with giant epithelial-like cells containing neutrophils in part of the lumen. The giant cells were immunopositive for cytokeratin and immunonegative for vimentin. Cell cannibalism is a cell engulfing phenomenon in which a cell incorporates either the same or a different type of cell and the incorporated cells are degenerate or necrotic. In this case, epithelial cells in the lumen of the cyst incorporated neutrophils, which corresponds to neutrophil cannibalism by squamous epithelial cells.

Conservative Management of Dentigerous Cysts Associated With Mixed Dentition: A Retrospective Cohort Study.

Objectives Thepediatric dentigerous cysts might vary by region and population group.Large cystic lesions are typically treated with marsupialization before enucleation in order to decompress the lesion and reduce its volume; however, in pediatric cystic lesions, conservative marsupialization and decompression can be used to manage the condition without additional enucleation. The current study's objectives were to present a case series of pediatric dentigerous cysts and discuss the conservative management of these cystic lesions associated with mixed dentition. Methods A retrospective cohort analysis of patientsdiagnosed with cystic lesions between 2016 and 2023 was identified. Data on clinical, radiological, pathological, and odontogenic causes were collected. The marsupialization approach was performed in all cases.Patient demographic information was also examined, and a literature review was carried out to identify comparable cases. Results Sixteen young patients were diagnosed with dentigerous cysts, and this was confirmed by clinical, radiological, and pathological examinations. Females comprised 56.2% of the cases, with the right side predominating (62.5%).Deciduous teeth related to the lesion could be extracted normally in all cases. All associated permanent teeth erupted rapidly after the intervention. Conclusion The marsupialization technique used in the current cases of dentigerous cysts associated with mixed dentition was highly successful, and all permanentimpacted teeth erupted without any cystic recurrence.

FRI351 Pituitary Stalk Epidermoid Cyst: A Rare Cause Of Diabetes Insipidus

Abstract Disclosure: J.T. Batch: None. F. Warda: None. P. Natter: None. R. Makary: None. G.Y. Gandhi: None. Introduction: Epidermoid cysts are benign squamous epithelial cysts filled with keratin. They are rarely found in the central nervous system, constituting 0.2-1.8% of intracranial masses, with the majority located in the cerebellopontine angle. Case Report: A 34-year-old female presented with blurred vision, debilitating headaches, milky breast discharge, and no menstrual periods for three years. Prolactin was mildly high on two occasions at 40.3 and 52.8 ng/mL (3.0-30.0 ng/mL). Estradiol was low at 15 pg/ml in the setting of inappropriately normal FSH (10.1 mIU/mL) and LH (5.8 mIU/mL). ACTH, cortisol, TSH, free thyroxine, and IGF-1 were in the normal range. A pregnancy test was negative. A 1:100 diluted prolactin did not detect the hook effect. MRI revealed a 1.8 x 1.4 x 1.4 cm suprasellar mass centered along the pituitary stalk with peripheral enhancement and central cystic vs. necrotic components. It caused a mass effect on the optic chiasm. Formal visual field testing revealed a left inferior temporal defect. Subsequently, the patient reported increased thirst (consuming 4-5 L of water daily) and urination (confirmed with a 24-hour urine output of 4 L). Following 12 hours of overnight water deprivation, morning labs confirmed diabetes insipidus with high serum sodium of 146 mmol/L, high serum osmolality of 306 mOsm/kg, and low urine osmolality of 204 mOsm/Kg. Initiation of oral DDAVP 0.1 mg nightly resulted in a resolution of nocturia and dramatic improvement in thirst. The patient underwent transsphenoidal resection, during which the neurosurgeon identified a suprasellar cystic lesion with classic epidermoid pearl white material. The lesion and capsule were resected, and patient started on dexamethasone 6 mg IV every 6 hours to prevent chemical meningitis. Pathology was consistent with an epidermoid cyst. Prolactin stained several cells, possibly from compression of the pituitary stalk by the epidermoid cyst. Postoperatively, the patient had severe headaches, and photophobia thought to be associated with chemical meningitis. Lumbar puncture revealed elevated CSF neutrophils and aseptic culture. The patient was continued on dexamethasone with slow taper upon discharge. DDAVP was increased to 0.1 mg twice daily as polyuria and polydipsia worsened. Discussion: There have been six reported cases of epidermoid cysts involving the pituitary stalk. Visual disturbance and headaches are common, while galactorrhea and amenorrhea are uncommon. Preoperative polyuria can be a frequent presenting symptom that can evolve into permanent postoperative diabetes insipidus. Surgical resection is the treatment of choice. It may be difficult to achieve complete excision due to the adherence of the cyst wall to the adjacent structures. The most common complications after resection include chemical meningitis (noted in our patient), hydrocephalus, infectious meningitis, and cranial nerve palsies. Presentation: Friday, June 16, 2023

THU101 A Challenging Case Of Recurrent Suprasellar Epidermoid Cyst With Visual Field Deficits

Abstract Disclosure: S. Ahsun: None. A. Atri: None. R. Bhat: None. C. eaton: None. N. Blocher: None. A challenging case of recurrent suprasellar epidermoid cyst with visual field deficits. Introduction: Intracranial epidermoid cysts account for approximately 1% of all intracranial tumors. The most common location of occurrence is cerebellopontine angle. Suprasellar region is the second most common location. We present a case for suprasellar epidermoid cyst with visual field deficits. Case Presentation: A 52 y/o female presented to an ophthalmologist for blurring of vision and was found to have bitemporal hemianopia. MRI of the brain showed a large suprasellar mass of 6.9x4.2x3.3 cm with extension into the surrounding structures. A portion of the cyst wall was hemorrhagic. There was significant mass-effect on the optic chiasm and bilateral optic tracts. Patient underwent elective craniotomy with left frontotemporal approach. A characteristic pearly wide epidermoid capsule was visualized through the oculomotor triangle. The optic nerve was noted to be quite distorted in its course, exiting from the optic canal and being pushed superiorly by the epidermoid tumor. Accessible tumor capsule was resected, however due to the dense adhesions of the epidermoid cyst to the surrounding vasculature and the optic nerves, complete resection was not attempted. Postoperatively, patient developed right-sided hemiparesis due to an acute infarct. Patient also developed some dementia, hyperphagia and aggressive behavior following her surgery. She started her rehabilitation therapy but had persistent dementia and cognitive decline. Repeat vision testing showed right superior homonymous hemianopia. MRI of the brain a year after the initial surgery showed growth of the residual cyst and some obstructive hydrocephalus but without any symptoms. She underwent a second debulking procedure that was successful with complete excision of the residual tumor but the patient had delayed recovery. She subsequently underwent tracheostomy and PEG tube placement and was transferred to the rehabilitation facility. She is now awake but still nonverbal. Patient also developed panhypopituitarism and is currently on the replacement for cortisol and thyroid hormone. She is also on DDAVP for her diabetes insipidus which seems to be permanent in her case. Conclusion: This case highlights some important facts: 1. Epidermoid cysts are challenging from the management standpoint. Only 50-80% can be resected completely. Incomplete removal increases the chances for recurrence which are variable at 1-54%. 2. Even in cases of recurrent growth repeat surgery should only be performed if patient has significant symptoms from the tumor. 3.As per the literature patients with adjuvant radiotherapy have improved outcomes. As in our case radiotherapy should have been considered in the setting of recurrence of the tumor. 4.Endoscopic endonasal approach is a new modality that has shown a very low rate of complications after resection. Presentation: Thursday, June 15, 2023

Metamorphosis of Dentigerous cyst: A case Series with Insight into Molecular Profiling.

The objective of this study was to review the clinical, radiologic, and histologic aspects of cases of dentigerous cysts metamorphosing into different entities along with comments on the molecular factors involved in the process. A series comprising 8 cases of dentigerous cysts was performed retrospectively along with a comprehensive literature review. Two cases of dentigerous cyst converting into mucous metaplasia were included, out of which one case was transformed into ameloblastoma after a year. The other two cases were reported as acanthomatous and unicystic ameloblastoma, whereas four transitioned to AOT. The complete review of cases and literature with molecular profiling concluded that the lining of dentigerous cysts has the potential for transforming into benign odontogenic tumors. Therefore, a careful clinical and histopathological examination is crucial for the correct diagnosis. Also, a thorough molecular understanding of the cystic lining is required.

Pediatric Dorsal Intradural Extra-Medullary Epidermoid Cyst (Non-Dysraphic): An Illustrative Case with Literature Review

A spinal epidermoid cyst is a rare congenital tumour that may be associated with spinal dysraphism. Congenital spinal epidermoid cysts without spinal dysraphism are rare. Here we are reporting a rare and interesting case of thoracic Intradural extra-medullary epidermoid cyst not associated with spinal dysraphism. Epidermoid cysts (EC) represent less than 1.0% and are rarely seen as an intradural extra-medullary spinal cord tumor. Preoperative Clinico- Radiological assumption is important for surgical planning. Journal of National Institute of Neurosciences Bangladesh, January 2023;9(1):88-95

Survivorship, Clinical Outcomes, and Radiographic Complications in the Infinity Total Ankle Arthroplasty at Mid-term (Minimum 5-Year) Follow-up

Category: Ankle Arthritis; Ankle Introduction/Purpose: As the frequency of total ankle arthroplasties (TAA) performed annually has increased significantly over the past decade, several novel TAA implants have entered the market. The Infinity TAA (Stryker, Mahwah, NJ) is a low-profile fixed- bearing implant that was approved for use in the United States in 2014. Although the short-term survivorship and complication rates of the Infinity TAA have been well documented in the literature, mid- to long-term outcome studies of this implant are limited. The aim of this study was to describe the survivorship, reoperation rate, and radiographic and clinical outcomes of the Infinity implant at minimum 5-year follow-up. We hypothesized that there would be no significant drop-off in clinical outcome or alignment from 2-year to 5-year follow-up. Methods: This is a single-institution retrospective review of patients who underwent primary TAA with the Infinity implant from July 2014 to April 2017. Four fellowship-trained foot and ankle surgeons contributed patients. Out of 74 identified ankles, 65 ankles in 64 patients had minimum clinical follow-up of 5 years (mean, 6.5; range, 5.0-8.0) and were included for analysis. Medical records were reviewed to record demographics, surgical data, complications, reoperations, and revisions. Radiographs were assessed to measure preoperative and postoperative alignment, and the incidence of postoperative peri-implant lucencies and cysts. Preoperative, 2-year, and 5-year postoperative Foot and Ankle Outcome Score (FAOS) subscores in the categories of Pain, Symptoms, Activities of Daily Living, Sports, and Quality of Life were obtained. The primary outcome was 5-year survivorship. Secondary outcomes were reoperations with retention of tibial and talar components, radiographic alignment, peri-implant lucencies/cysts, and clinical outcomes (FAOS) scores. Results: Implant survivorship at 5 years was 93.8%, with 4/65 revisions. Three revisions occurred less than 2 years from the index surgery (2/3 for tibial subsidence; 1/3 for tibial and talar subsidence). The fourth revision occurred at 7.1 years due to cystic changes with tibial and talar subsidence. There were 11 reoperations in 10 ankles. Alignment correction achieved surgically (preop coronal deformity 9.0 ± 6.8°; 1Y postop 1.6 ± 1.5°) was maintained at final radiographic follow-up (1.8 ± 1.7°; P = 0.32). There were 16 ankles (24.6%) with peri-implant radiographic abnormalities: 14 cases of lucency (14 tibia, 0 talus) and 3 cases of cysts. FAOS outcomes demonstrated significant improvement from preop to postop in all five domains at 2 years, which were maintained at 5 years. Conclusion: The mid-term outcomes of the Infinity implant in this single-institution study demonstrated good survivorship of 93.8% and improved clinical outcomes at mean 6.3-year follow-up. This was a mid-term follow-up to the 2-year outcome study published at this institution. Radiographic assessment at final follow-up demonstrated that alignment correction was maintained, and there was a 21.5% incidence of asymptomatic periprosthetic lucencies. These results demonstrate that there was no significant change in radiographic or clinical outcomes with this implant after 5 years, which is valuable for surgeons in terms of counseling and following patients in the immediate and mid-term postoperative period.

Assessing impacted third molars: Cellular activity in dental follicles and dentigerous cysts

ABSTRACT Background: Dentigerous cysts are among the most prevalent odontogenic cysts associated with impacted teeth, particularly impacted third molars. Understanding the clinicopathological correlation between impacted teeth and factors contributing to cyst formation is essential. Aim: This study aimed to investigate the clinicopathological correlation between impacted teeth and the factors associated with dentigerous cyst formation. Materials and Methods: The study analyzed a total of 30 cases, which were categorized into two subgroups: 16 cases of dental follicles and 14 cases of dentigerous cysts. Retrospective data were collected from the departmental archive, and demographic data along with clinical parameters were correlated. In addition, the Ki-67 index was assessed through immunohistochemical analysis for both study groups. Results: A clinical correlation between impacted teeth along with Ki-67 index in both dental follicles and dentigerous cysts was observed. Conclusion: Based on the findings, it is hypothesized that prophylactic extraction of impacted third molars should be mandatory, irrespective of their symptomatic or asymptomatic status.

A case of bilateral iris cyst in a young Asian adult

A case of bilateral iris cyst in a young Asian adult

Secondary iris cyst following ocular blunt trauma: A case report

We present an uncommon case of a post-traumatic iris cyst following blunt trauma with secondary glaucoma. A 19-yr-old male presented with hyphaema and redness in the right eye. Slit-lamp examination and ultrasound biomicroscopy were consistent with an inferior iris cyst. Intraocular pressure was raised, and angle recession was present in the nasal quadrant on gonioscopy which made us probe for blunt trauma history, which was present. With no other causative history or signs and ruling out ciliary body tumor using imaging, we made our diagnosis. Pressures were reduced with antiglaucoma medication. Though uncommon, blunt trauma should be considered as a cause after ruling out other causes, especially malignancy.

Differential Diagnosis between Parapyelic Cyst and Pyeloureteral Junction: A Clinical Case Study

Objectives: Intra-sinus renal cysts or parapyelic cysts represent a rare form of renal cysts. They are often associated with lower back pain. Symptomatic cases can be treated with percutaneous puncture and sclerotherapy, but due to the proximity to the renal hilum, the treatment of these cysts has undergone significant changes. Thus, percutaneous treatment has become contraindicated due to the potential for complications. While laparoscopic treatment appears to be the most suitable and effective technique, open surgery still has its indications, especially for large cysts and cases where there is diagnostic uncertainty along with an associated junction abnormality, as is the case in our study. Patients and Methods: We report a case of a right parapyelic cyst revealed by acute right pyelonephritis, with a diagnostic scan suggesting pyeloureteral junction syndrome secondary to a subpyelic crossing with an 8 cm parapyelic cyst, with contrast material passing into the cyst. Due to diagnostic uncertainty and operative difficulties under laparoscopy, a right lumbotomy was performed, allowing for the resection of an 8 cm parapyelic cyst and confirming the absence of an associated junction abnormality, without intraoperative complications. Results: 450 cc of citrine yellow fluid was recovered, with a permeable junction and absence of the lower polar vessel. Postoperative evolution was favorable both medically and surgically, with removal of the urinary catheter and JJ stent on postoperative day 5. Conclusion: Surgical treatment of parapyelic cysts through lumbotomy remains of interest as an effective approach, especially in cases of diagnostic uncertainty, with low morbidity and a short convalescence period.

Characterization and Classification of Postoperative Cysts After Strabismus Surgery: Clinical, Histological, and Anterior Segment OCT Analysis in a Large German Cohort.

In this work, we provide a detailed characterization of a rare complication-subconjunctival cyst formation after strabismus surgery-in a large German cohort. We conducted a retrospective analysis of 822 consecutive patients who underwent strabismus surgery between 2015 and 2022. The patients received comprehensive eye and orthoptic examinations preoperatively, at 1day, and at 3months postoperatively. Cysts were analyzed with slit-lamp examination, anterior segment optical coherence tomography (AS-OCT), and histopathological subsumption. Nineteen cases of postoperative cysts were observed (2.3%), 12 of which underwent surgical revision. Clinical evaluation including slit-lamp and AS-OCT as well as histological analysis resulted in a classification of three types of cysts: type 1, which is a single hyporeflective cyst, type 2, which is a multilobular hyporeflective cyst, and type 3, a dense hyperreflective granulomatous-like cyst. Eta (η) correlation ratio analysis could show a correlation between time of clinical appearance and type of cyst (Eta = 0.63). Most cysts developed within 20days after surgery. Not only did cysts more frequently affect the medial rectus muscle, which in most cases underwent a shortening procedure (11/19 tucks, 4/19 resections) for intermittent exotropia (X(T)), but the cyst also formed earlier than in the lateral rectus muscle (Eta = 0.45). No correlation could be shown between the type of surgical procedure and time of cyst occurrence (Eta = 0.1). Patient age and cyst type correlated strongly (Eta = 0.47). The underlying type of strabismus did not correlate with the type of cyst observed. Our cases showed a strong positive correlation to the type of strabismus (X(T)), age (young patients), and the procedure (tuck/resection). We introduce a grading system for postoperative cysts after strabismus surgery, complementing histopathology and slit-lamp aspects with AS-OCT information.