scholarly journals Intradiploic Epidermoid of the Tegmen Tympani With Cochlear Invasion

2020 ◽  
pp. 014556131990075
Author(s):  
Cheryl Yu ◽  
Aasif A. Kazi ◽  
Daniel H. Coelho
Keyword(s):  
Temporal Bone ◽  
Benign Tumors ◽  
Complex Signal ◽  
Complete Excision ◽  
Epidermoid Cysts ◽  
Tegmen Tympani ◽  
Prolonged Duration ◽  
Magnetic Resonance Imaging Mri ◽  
The Right ◽  
Cyst Lining

Intradiploic epidermoid cysts are benign tumors that account for ∼1% of all intracranial space occupying lesions. Because of the indolent growth, symptoms are usually gradual in onset with a prolonged duration. While they can originate from any part of the skull, temporal bone epidermoids are rare. We describe a case of an unusual presentation of a temporal bone epidermoid cyst. A 64-year-old male presented with sudden right-sided hearing loss and worsening right eyelid ptosis was found to have a nonenhancing lobulated mass above the right tegmen tympani with complex signal and possible communication with the apical turn of the cochlea on magnetic resonance imaging (MRI). He underwent subtemporal craniotomy with excision of the cyst lining and matrix without any complications and was discharged home on postoperative day 1. Complete excision was not possible given that the facial nerve and cochlea were improved. He had subjective improvement in his hearing immediately after surgery. Intradiploic epidermoid cysts are benign tumors that can present anywhere in the skull with variable presentation. While complete excision is the goal, neurovascular involvement may make this challenging. The use of computed tomography scan and MRI can prove to be invaluable in determining accurate diagnosis and size for surgical planning.

scholarly journals Osteoma Presenting as a Painless Solitary Mastoid Swelling

2015 ◽  
Vol 2015 ◽  
pp. 1-3 ◽  
Author(s):  
Hazem M. Abdel Tawab ◽  
Ravi Kumar V ◽  
Salim M. Sloma Tabook
Keyword(s):  
Case Report ◽  
Cortical Bone ◽  
Temporal Bone ◽  
Benign Tumor ◽  
Complete Removal ◽  
Cell System ◽  
Complete Excision ◽  
Mastoid Bone ◽  
Cortical Mastoidectomy ◽  
The Right

Introduction.Osteoma of the temporal bone is a very uncommon benign tumor of bone. Osteomas may occur in the external auditory canals but are reported to be very rare in the mastoid bone.Case Report.A 36-year-old male presented to our department with a hard swelling behind the right ear diagnosed as osteoma. Complete excision was done through a postauricular approach. Histopathology confirmed the diagnosis of osteoma.Conclusion.Osteomas, although rare, should be considered when dealing with any hard mastoid swelling. Complete removal can be ensured by drilling till the normal cortical bone is reached to avoid recurrence. A cortical mastoidectomy should be done if the mastoid air cell system is involved.

scholarly journals Intractable Trigeminal Neuralgia Secondary to Osteoma of the Clivus: A Case Report and Literature Review

2022 ◽  
Author(s):  
Ebtesam Abdulla ◽  
Krishna Das ◽  
Joseph Ravindra ◽  
Tejal Shah ◽  
Sara George
Keyword(s):  
Trigeminal Neuralgia ◽  
Pressure Effect ◽  
Benign Tumors ◽  
Radiographic Images ◽  
Patient Reported ◽  
Magnetic Resonance Imaging Mri ◽  
The Right ◽  
Slow Growing ◽  
Serial Observation

AbstractSkull base osteomas (SBOs) are benign tumors that are frequently detected on radiographic images by coincidence. They are known for being slow-growing tumors and rarely symptomatic. The therapeutic approach for SBOs can differ substantially. Depending on the symptoms, size, and location of the tumor, this can range from serial observation to vigorous surgical extirpation. Clival osteoma is extremely rare. We report a case of clival osteoma, causing intractable trigeminal neuralgia due to the pressure effect on the trigeminal nerve at Meckel's cave. We also provide a review of pertinent literature. A 37-year-old woman presented with intractable trigeminal neuralgia. Cranial magnetic resonance imaging (MRI) demonstrated a large, lobulated, extra-axial lesion involving the right cerebellopontine angle and epicentering the clivus. Pathologically, the specimen was proven to be osteoma. The patient reported complete symptom resolution over a 4-year follow-up period. To the best of the authors' knowledge, this is the first clinical case of intractable trigeminal neuralgia due to clival osteoma.

scholarly journals Inflammatory Pseudotumor (Plasma Cell Granuloma) of the Temporal Bone

2010 ◽  
Vol 89 (7) ◽  
pp. E1-E13 ◽  
Author(s):  
Dare V. Ajibade ◽  
Iwao K. Tanaka ◽  
Kapila V. Paghda ◽  
Neena Mirani ◽  
Huey-Jen Lee ◽  
...  
Keyword(s):  
Temporal Bone ◽  
Plasma Cell ◽  
Inflammatory Pseudotumor ◽  
Soft Tissues ◽  
Plasma Cell Granuloma ◽  
Tissue Mass ◽  
Tegmen Tympani ◽  
The Right ◽  
Multiple Recurrences

We report the case of a 41-year-old man who presented with progressive right-sided ear pressure, otalgia, hearing loss, tinnitus, and intermittent otorrhea. Computed tomography and magnetic resonance imaging detected a soft-tissue mass in the right mastoid with intracranial invasion and erosion through the tegmen tympani and mastoid cortex. Histopathologic examination was consistent with an inflammatory pseudotumor (plasma cell granuloma). These lesions rarely occur in the temporal bone. When they do, they are locally destructive and can erode bone and soft tissues. Aggressive surgery is recommended as a first-line treatment, with adjunctive steroid or radiotherapy reserved for residual or refractory disease. Our patient subsequently experienced multiple recurrences, and his treatment required all of these modalities. At the most recent follow-up, he was disease-free and doing well.

scholarly journals Rare Tumors Presenting as a Mastoid Mass

2020 ◽  
Vol 2020 ◽  
pp. 1-4
Author(s):  
Jiyeon Lee ◽  
Kyujin Han ◽  
Chang-Hee Kim
Keyword(s):  
General Practice ◽  
Chief Complaint ◽  
Sternocleidomastoid Muscle ◽  
Mass Lesion ◽  
Benign Tumors ◽  
Complete Excision ◽  
Palpable Mass ◽  
Rare Tumors ◽  
Intramuscular Lipoma ◽  
The Right

In terms of diagnosis, a painless isolated mass lesion around the mastoid area is rarely encountered in general practice. In the present study, we report two cases of painless benign mastoid tumors located in the postauricular region. The first patient visited our department with a painless progressing mass lesion behind the right ear, which was later revealed as an intramuscular lipoma in the mastoid origin site of the sternocleidomastoid muscle. The second patient similarly presented to our department with a chief complaint of a painless, palpable mass in the mastoid region. Biopsy results confirmed the diagnosis of an osteoma. In both cases, the tumor was surgically removed by a postauricular approach. Although osteoma and lipoma are benign tumors rarely involved in the mastoid area, presenting without symptoms, it is recommended of complete excision, especially in cases with symptoms or cosmetic deformity.

scholarly journals Giant Epidermoid Cyst of Posterior Fossa—Our Experience and Literature Review

Dose-Response ◽  
2021 ◽  
Vol 19 (1) ◽  
pp. 155932582110020
Author(s):  
Giacomo Spinato ◽  
Piergiorgio Gaudioso ◽  
Maurizio Falcioni ◽  
Maria Cristina Da Mosto ◽  
Salvatore Cocuzza ◽  
...  
Keyword(s):  
Posterior Fossa ◽  
Valsalva Maneuver ◽  
Disease Diagnosis ◽  
Epidermal Cyst ◽  
Benign Tumors ◽  
Radiological Investigation ◽  
Epidermoid Cysts ◽  
Elective Treatment ◽  
The Right ◽  
Intracranial Epidermoid

Introduction. Intracranial epidermoid cysts are the most frequent congenital intracranial lesion. They rare and benign tumors that can present in different clinical situations depending on location and extension of the disease. Diagnosis is obtained with radiological imaging with RM and non-enhanced TC as elective investigating methods. Elective treatment is surgery, based on total/subtotal excision sparring healthy neurovascular structures, considering the benign nature of this lesion. Case Report. In this study we present the case of a 79-year-old woman affected by recidivist epidermal cyst of the posterior fossa. Clinical presentation was characterized by positional subjective vertigo, intense headache localized in the right part of the head increased by Valsalva maneuver and retroarticular subcutaneous swelling. Radiological investigation found a giant epidemoid cyst of the posterior fossa (8,4 x 4,8 x 5,8 cm), treated with surgery. In the postoperative, the patient was fine and no neurological deficit has been encounterd. REVIEW. In this study, we present a review of the literature regarding giant epidermoid cysts of posterior fossa. Only 11 cases were reported before ours, which actually is one of the largest ever described.

An Unusual Presentation of Pleomorphic Lipoma

2020 ◽  
Vol 154 (Supplement_1) ◽  
pp. S23-S24
Author(s):  
F Smith ◽  
E Martinez Duarte
Keyword(s):  
Adipose Tissue ◽  
Subcutaneous Tissue ◽  
Smooth Muscle Actin ◽  
Benign Tumors ◽  
Complete Excision ◽  
Pleomorphic Lipoma ◽  
Posterior Neck ◽  
Low Incidence ◽  
Mitotic Figures ◽  
The Right

Abstract Introduction/Objective Pleomorphic lipomas are benign tumors that typically occur in the shoulder, posterior neck, and back. Here, we present a case of a pleomorphic lipoma arising in an unusual location. Methods A 63-year-old male presented with a 1.3 x 1.3 x 0.9 cm enhancing slightly heterogeneous mass in the subcutaneous tissue superficial to the right parotid tail. The mass was biopsied and then excised. Results Histopathologic examination of the biopsy and resection specimens revealed an adipocytic neoplasm composed of mature adipose tissue with admixed spindle cells within a myxoid stroma. Lipoblasts, cellular atypia or increased mitotic figures were absent. Numerous floret-like cells were identified. These floret cells are characteristic of pleomorphic lipoma. The tumor cells were diffusely positive for CD34 and negative for desmin, smooth muscle actin, MyoD1, keratin, SOX10, and Melan-A by immunohistochemistry, consistent with pleomorphic lipoma. Conclusion Pleomorphic lipomas arising from the periparotid adipose tissue are rare. They tend to have a favorable prognosis with low incidence of recurrence if excised with clear margins. Following complete excision, the patient is doing well.

scholarly journals Pediatric skull bone defect due to epidermoid cyst

2021 ◽  
Vol 40 (1) ◽  
pp. 52
Author(s):  
Robert Sinurat ◽  
Fajar Lamhot Gultom
Keyword(s):  
Epidermoid Cyst ◽  
Pediatric Patients ◽  
Bone Destruction ◽  
Neck Region ◽  
Hair Follicles ◽  
Benign Tumors ◽  
Anterior Fontanel ◽  
Complete Excision ◽  
Epidermoid Cysts ◽  
One Year

Background<br />Tumors of the skull usually affect adult patients and less than twenty percent of pediatric patients. As the tumors grow, the surrounding bone may undergo destruction and erosion. When the tumors are located in the fontanel, the timely closure of the fontanel may be inhibited. Epidermoid cysts are benign tumors that are intracranially located and very rarely in the midline of the cranium. Meanwhile about 32% of stratified-squamous epithelial epidermoid cysts affect the head and neck region and only 6.7% occur in the scalp. We report an unusual epidermoid cyst located and growing in the anterior fontanel of a pediatric patient and inhibiting fontanel closure.<br /><br />Case Description <br />A 21-month-old boy and his parents visited our polyclinic because there was a lump on his anterior fontanel since four months before they came to the hospital. The lump was initially the size of a peanut and had grown to become as large as a quail’s egg. The physical examination was normal and the brain CT-scan showed bone destruction without any intracranial lesion. The tumor was excised on the preoperative diagnosis of dermoid cyst. Histopathology examination showed the characteristics of an epidermoid cyst. The cyst had a wall and was full of keratin flakes without hair follicles or sebaceous glands. Follow-up one year after complete excision did not reveal any recurrence. <br /><br />Conclusion<br />Epidermoid cysts in the skull of pediatric patients must be completely excised as soon as possible because their growth can damage the bone and inhibit the closure of the sutures.

A Comparison of Diagnostic Accuracy of Superior Semicircular Canal Dehiscence in MDCT and MRI, and Coexistence with Tegmen Tympani Dehiscence

2020 ◽  
Author(s):  
Mikail Inal ◽  
Nuray Bayar Muluk ◽  
Mehmet H. Şahan ◽  
Neşe Asal ◽  
Gökçe Şimşek ◽  
...  
Keyword(s):  
Temporal Lobe ◽  
Semicircular Canal ◽  
Temporal Distance ◽  
Superior Semicircular Canal Dehiscence ◽  
Superior Semicircular Canal ◽  
Tegmen Tympani ◽  
Males And Females ◽  
Magnetic Resonance Imaging Mri ◽  
The Right ◽  
Canal Dehiscence

Abstract Objectives Tegmen tympani dehiscence in temporal multidetector computed tomography (MDCT) and superior semicircular canal dehiscence may be seen together. We investigated superior semicircular canal dehiscence in temporal MDCT and temporal magnetic resonance imaging (MRI). Methods In this retrospective study, 127 temporal MRI and MDCT scans of the same patients were reviewed. In all, 48.8% (n = 62) of cases were male, and 51.2% (n = 65) of cases were female. Superior semicircular canal dehiscence and superior semicircular canal-temporal lobe distance were evaluated by both MDCT and MRI. Tegmen tympani dehiscence was evaluated by MDCT. Results Superior semicircular canal dehiscence was detected in 14 cases (5.5%) by temporal MDCT and 15 cases (5.9%) by temporal MRI. In 13 cases (5.1%), it was detected by both MDCT and MRI. In one case (0.4%), it was detected by only temporal MDCT, and in two cases (0.8%), it was detected by only temporal MRI. Median superior semicircular canal-to-temporal distance was 0.66 mm in both males and females in temporal MDCT and temporal MRI. In both temporal MDCT and temporal MRI, as superior semicircular canal-to-temporal lobe distance increased, the presence of superior semicircular canal dehiscence in temporal MDCT and temporal MRI decreased. Tegmen tympani dehiscence was detected in eight cases (6.3%) on the right side and six cases (4.7%) on the left side. The presence of tegmen tympani dehiscence in temporal MDCT and the presence of superior semicircular dehiscence in MDCT and MRI increased. Conclusion Superior semicircular canal dehiscence was detected by both MDCT and MRI. Due to the accuracy of the MRI method to detect superior semicircular dehiscence, we recommend using MRI instead of MDCT to diagnose superior semicircular canal dehiscence. Moreover, there is no radiation exposure from MRI.

scholarly journals The Challenges of Treating Lipoblastoma in the Sublingual Space – A Case Report

2021 ◽  
Vol 28 ◽  
pp. 47-51
Author(s):  
Sujesh Sreedharan ◽  
Palasuntharam Shanmuhasuntharam
Keyword(s):  
Anterior Margin ◽  
Sublingual Gland ◽  
Resonance Imaging ◽  
Mylohyoid Muscle ◽  
Complete Excision ◽  
Close Proximity ◽  
Magnetic Resonance Imaging Mri ◽  
The Right

The presence of lobulated tumour arising from immature adipose tissue is called lipoblastoma when occurring as localised or discrete lesion, and lipoblastomatosis when spread diffusely. The purpose of this case study is to report a case of an 18 – year old man who presented with lipoblastoma in the left sublingual space which was found to be in close proximity with the left sublingual gland. Magnetic resonance imaging (MRI) was taken and showed the tumour was confined within the sublingual space and no penetration was noted inferiorly through the mylohyoid muscle. Tumour dimension measured clinically was 3 cm x 2 cm x 2 cm and the anterior margin of the tumour crossed the midline and entered into the right sublingual space. Complete excision with sparing of neurovascular bundle was performed under general anaesthesia. Follow-up of 2 months showed complete remission of the lesion without any complications.

scholarly journals Ocular Vestibular Evoked Myogenic Potentials and Intravestibular Intralabyrinthine Schwannomas

2018 ◽  
Vol 97 (7) ◽  
pp. E21-E25 ◽  
Author(s):  
Massimo Ralli ◽  
Giuseppe Nola ◽  
Massimo Fusconi ◽  
Luca Sparvoli ◽  
Giovanni Ralli
Keyword(s):  
Contralateral Side ◽  
Vestibular Evoked Myogenic Potentials ◽  
Diagnostic Process ◽  
Benign Tumors ◽  
Average Delay ◽  
Diagnostic Modality ◽  
Ocular Reflex ◽  
Vestibulo Ocular Reflex ◽  
Magnetic Resonance Imaging Mri ◽  
The Right

Intravestibular intralabyrinthine schwannomas (ILSs) are uncommon benign tumors that arise from the sac-cular, utricular, and lateral and superior ampullary nerves. According to the literature, there is an average delay of 8 years between the onset of symptoms and diagnosis. Te diagnosis is based on an audiovestibular examination and magnetic resonance imaging (MRI). We describe a case of intravestibular ILS in which we included the ocular vestibular evoked myogenic potentials (oVEMPs) test in the diagnostic workup. The oVE-MPs test is a relatively new neurophysiologic diagnostic modality that evaluates the superior vestibular pathway and the ascending contralateral pathway through the vestibulo-ocular reflex. In our case, a 65-year-old man presented with progressive right-sided sensorineu-ral hearing loss, dizziness, and tinnitus and fullness in his right ear. Audiovestibular examination and MRI detected an intravestibular ILS on the right. We found that oVEMPs were absent on the contralateral side, which contributed to the diagnostic process. Te detection of oVEMPs can provide detailed information on the functionality of the macula of the utricle and the lateral and superior ampullary nerves, with a precise identification of the affected area. Based on our findings, we discuss the role of oVEMPs in the diagnosis of an intravestibular ILS.

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