1
|
Phan T, Tong J, Krivanek M, Graf N, Dexter M, Tumuluri K. Aneurysmal Bone Cyst of the Orbit With USP6 Gene Rearrangement. Ophthalmic Plast Reconstr Surg 2023; 39:206-210. [PMID: 36356178 DOI: 10.1097/iop.0000000000002287] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
PURPOSE Aneurysmal bone cyst (ABC) of the orbit is a very rare tumor, occurring mostly in the pediatric population, and can result in sight threatening complications and disfigurement. This review discusses previously reported cases with a focus on evolving treatment options and molecular genetics. METHODS We report the youngest case of an orbital ABC with a confirmed gene fusion: a 17-month-old girl, with confirmed FGFR-UPS6 (Fibroblast Growth Factor Receptor 1-ubiquitin specific peptidase 6/tre-2). A literature search for relevant publications on the topic was performed via Medline and PubMed, with the appropriate data extracted. RESULTS Thirty-two cases of orbital aneurysmal bone cyst were identified in the literature. Presentations are varied and can include pain, proptosis, decreased vision, and extraocular motility disturbance. Typical imaging and histopathology findings are discussed, in particular the usefulness of identifying USP6 gene arrangements. Treatment modalities are reviewed including surgery, embolization, and receptor activator of nuclear factor kappa-B ligand (RANKL) inhibitors. Recurrences can occur, usually within 2 years. CONCLUSIONS Orbital ABC is a neoplasm that presents unique diagnostic and treatment challenges. Gene rearrangements can confirm primary ABC and rule out other underlying pathology. Disfigurement and sight threatening complications can occur due to both the disease process and with treatment. Outcomes may be improved with the use of systemic therapy.
Collapse
Affiliation(s)
- Tracey Phan
- The Department of Ophthalmology, Children's Hospital Westmead, Sydney, NSW, Australia
| | - Jessica Tong
- The Department of Ophthalmology, Children's Hospital Westmead, Sydney, NSW, Australia
- Faculty of Medicine, Save Sight Institute, University of Sydney, Sydney, NSW, Australia
| | - Michael Krivanek
- Department of Histopathology, Children's Hospital Westmead, Sydney, NSW, Australia
| | - Nicole Graf
- Department of Histopathology, Children's Hospital Westmead, Sydney, NSW, Australia
- University of Western Sydney, Sydney, NSW, Australia
- University of Sydney, Sydney, NSW, Australia
| | - Mark Dexter
- Department of Neurosurgery, Children's Hospital Westmead, Sydney, NSW, Australia
| | - Krishna Tumuluri
- The Department of Ophthalmology, Children's Hospital Westmead, Sydney, NSW, Australia
- Faculty of Medicine, Save Sight Institute, University of Sydney, Sydney, NSW, Australia
- Faculty of Medicine, Macquarie University, Sydney, NSW, Australia
| |
Collapse
|
2
|
Waldman S, Shimonov M, Yang N, Spielman D, Godfrey KJ, Dean KE, Phillips CD, Helman SN. Benign bony tumors of the paranasal sinuses, orbit, and skull base. Am J Otolaryngol 2022; 43:103404. [PMID: 35246319 DOI: 10.1016/j.amjoto.2022.103404] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 02/13/2022] [Indexed: 11/15/2022]
Abstract
Benign bony tumors of the skull base and paranasal sinuses are uncommon entities, with an overall higher incidence in males. Benign bony tumors may lead to local expansion with resultant mass effect of potentially critical structures. Some benign bony tumors may undergo malignant transformation. This article reviews the presentation and management of benign bone tumors of the skull base and paranasal sinuses with special consideration to involvement of the adjacent orbit, intracranial and critical neurovascular structures. This review covers tumor incidence, location, gross and histologic appearance as well as radiographic findings, treatment, and recurrence rates. Tumors discussed in this article include osteochondromas, osteomas, osteoid osteomas, aneurysmal bone cysts, fibrous dysplasia, giant cell tumors, cemento-ossifying fibroma, ameloblastic fibro-odontoma, ecchordosis physaliphora, chondromyxoid fibroma, primary chronic osteomyelitis, primary chronic osteomyelitis, osteochondromyxoma, and dense bone islands.
Collapse
Affiliation(s)
- Spencer Waldman
- SUNY Downstate, College of Medicine, 450 Clarkson Ave, Brooklyn, NY 11203, United States of America.
| | - Menachem Shimonov
- SUNY Downstate, College of Medicine, 450 Clarkson Ave, Brooklyn, NY 11203, United States of America.
| | - Nathan Yang
- Weill Cornell Medical College, Department of Otolaryngology - Head and Neck Surgery, 2315 Broadway, 3rd Floor, New York, NY 10024, United States of America.
| | - Daniel Spielman
- Weill Cornell Medical College, Department of Otolaryngology - Head and Neck Surgery, 2315 Broadway, 3rd Floor, New York, NY 10024, United States of America.
| | - Kyle J Godfrey
- Weill Cornell Medical College, Department of Ophthalmology--1305 York Ave, 12(th) Floor New York, NY 10021, United States of America.
| | - Kathryn E Dean
- Weill Cornell Imaging at New York-Presbyterian 1305 York Avenue,3rd Floor, New York, NY 10021, United States of America.
| | - C Douglas Phillips
- Weill Cornell Imaging at New York-Presbyterian 1305 York Avenue,3rd Floor, New York, NY 10021, United States of America.
| | - Samuel Nathaniel Helman
- Weill Cornell Medical College, Department of Otolaryngology - Head and Neck Surgery, 2315 Broadway, 3rd Floor, New York, NY 10024, United States of America.
| |
Collapse
|
3
|
Han Y, Yang X, Tang L, Wang P, Zhang J, Ge W, Ni X. Primary Aneurysmal Bone Cyst of Nasal Cavity and Sinuses in a Child: Case Report and Literature Review. EAR, NOSE & THROAT JOURNAL 2022; 102:231-238. [PMID: 35428416 DOI: 10.1177/01455613221081569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
INTRODUCTION Aneurysmal bone cysts (ABCs) are a rare benign bone lesion, which are divided into primary and secondary categories, and occur mainly in the vertebra and the long tubular bones. Primary ABCs in the nasal cavity and the sinuses are rare. CASE PRESENTATION We reported on a one-year-old boy who suffered from progressive nasal obstruction and intermittent nosebleeds over a period of approximately 1 month. The patient had no history of trauma or surgery. Physical examination showed a red tumor in his right nasal cavity. A magnetic resonance imaging scan showed a multicystic lesion arising from the ethmoid sinus. The lesion was resected under a nasal endoscope without any complications. Histological evaluation confirmed that the lesion was an aneurysmal bone cyst. Because an osteoma was found during the surgery on the cyst, the lesion was considered secondary clinically. However, fluorescence in situ hybridization testing showed a rearrangement of the USP6 (ubiquitin-specific protease 6) oncogene on chromosome 17. No recurrence was observed after 1 year. CONCLUSION An ABC of the nasal cavity and sinuses in such a young child is very rare and needs to be further analyzed according to postoperative pathology and combined with a genetic examination to make a diagnosis. Endoscopic sinus surgery is an effective method of treatment for this kind of disease.
Collapse
Affiliation(s)
- Yang Han
- Department of Otolaryngology, Head and Neck Surgery, 117984Beijing Children's Hospital, Capital Medical University, China
| | - Xiaojian Yang
- Department of Otolaryngology, Head and Neck Surgery, 117984Beijing Children's Hospital, Capital Medical University, China
| | - Lixing Tang
- Department of Otolaryngology, Head and Neck Surgery, 117984Beijing Children's Hospital, Capital Medical University, China
| | - Pengpeng Wang
- Department of Otolaryngology, Head and Neck Surgery, 117984Beijing Children's Hospital, Capital Medical University, China
| | - Jie Zhang
- Department of Otolaryngology, Head and Neck Surgery, 117984Beijing Children's Hospital, Capital Medical University, China
| | - Wentong Ge
- Department of Otolaryngology, Head and Neck Surgery, 117984Beijing Children's Hospital, Capital Medical University, China.,Beijing Key Laboratory for Pediatric Diseases of Otolaryngology, Head and Neck Surgery, 117984Beijing Children's Hospital, Capital Medical University, China
| | - Xin Ni
- Department of Otolaryngology, Head and Neck Surgery, 117984Beijing Children's Hospital, Capital Medical University, China.,Beijing Key Laboratory for Pediatric Diseases of Otolaryngology, Head and Neck Surgery, 117984Beijing Children's Hospital, Capital Medical University, China
| |
Collapse
|
4
|
Smith AJ, Choby G, Van Gompel JJ, Link MJ, Van Abel KM. Aneurysmal Bone Cysts of the Paranasal Sinuses: The Mayo Clinic Experience and Review of the Literature. Laryngoscope 2021; 131:E2525-E2533. [PMID: 33646602 DOI: 10.1002/lary.29478] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 02/11/2021] [Accepted: 02/15/2021] [Indexed: 01/23/2023]
Abstract
OBJECTIVE/HYPOTHESIS Aneurysmal bone cysts (ABCs) are benign, lytic bone lesions, which rarely present in the paranasal sinuses. There is no published consensus on the appropriate diagnostic or treatment approach. Our objective was to elucidate the clinical behavior, treatment, and outcomes for patients with ABCs of the paranasal sinuses (psABCs). STUDY DESIGN Retrospective case series and system review of the literature. METHODS A retrospective chart review was performed to identify patients evaluated at the authors' institution with psABC and consolidated with literature reports of psABC. RESULTS Eighty-nine patients met inclusion criteria. The most common presenting symptom was painless facial swelling (n = 35, 39%). The ethmoid sinuses were the most common site involved (n = 55, 62%). Surgical approach was reported in 74 cases including 20 endoscopic and 54 with an open or combined approach. Fifty-nine patients (71%) underwent gross total resection. Follow up data was reported for 67 patients. Fifteen patients (22%) were found to have recurrence or progression at follow up; 10/15 (66%) patients within the first 12 months, 14/15 (93%) within the first 24 months, and 1/15 (7%) greater than 24 months after treatment. Patients were more likely to have recurrence/progression if they presented with nasal discharge (P = .05), proptosis (P = .01), or orbital involvement (P = .03). CONCLUSIONS psABCs typically present with painless swelling or nasal obstruction. Orbital involvement is a negative prognostic indicator with these patients more likely to have recurrence after treatment. Recurrence or progression of disease is most likely to occur within 2 years after treatment. Therefore, patients should be monitored closely during this time. LEVEL OF EVIDENCE 4 Laryngoscope, 131:E2525-E2533, 2021.
Collapse
Affiliation(s)
- Alyssa J Smith
- Department of Otolaryngology-Head and Neck Surgery, Mayo Clinic, Rochester, Minnesota, U.S.A
| | - Garret Choby
- Department of Otolaryngology-Head and Neck Surgery, Mayo Clinic, Rochester, Minnesota, U.S.A
| | - Jamie J Van Gompel
- Department of Neurologic Surgery, Mayo Clinic, Rochester, Minnesota, U.S.A
| | - Michael J Link
- Department of Neurologic Surgery, Mayo Clinic, Rochester, Minnesota, U.S.A
| | - Kathryn M Van Abel
- Department of Otolaryngology-Head and Neck Surgery, Mayo Clinic, Rochester, Minnesota, U.S.A
| |
Collapse
|
5
|
Richardson J, Litman E, Stanbouly D, Lee KC, Philipone E. Aneurysmal bone cyst of the head & neck: A review of reported cases in the literature. JOURNAL OF STOMATOLOGY, ORAL AND MAXILLOFACIAL SURGERY 2021; 123:59-63. [PMID: 33529841 DOI: 10.1016/j.jormas.2021.01.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 01/19/2021] [Indexed: 01/07/2023]
Abstract
The aneurysmal bone cyst (ABC) is a benign, blood-filled bony lesion that notoriously affects the vertebral column and long bones of the body. Rarely, ABCs can manifest in the head and neck (HNABC). The purpose of this paper is to provide a comprehensive review of existing literature on HNABC. This review includes: case reports and case series on ABCs manifesting in the head and neck region published in the English language. All cases identified via PubMed were analyzed individually. Articles were included according to specified eligibility criteria. The total number of cases analyzed were 72 (39 case reports; 33 case series). The average age at the time of HNABC diagnosis was 19.1 years (range: 0.42-62 years). The ratio of prevalence by gender affected exhibited an even 1:1 male-to-female split. CT in combination with MRI proved to be the most prevalent imaging modality utilized (37.2%). HNABC was most commonly detected in the mandible (37.1%), followed by the sinus (14.3%) and cranium (11.4%). The most frequently employed single treatment modality was surgical excision (94.1%). 94.4% of patients were alive with no evidence of disease at follow-up, while 5.6% of patients exhibited disease at follow-up. The average follow-up period was 3.59 years (range: 0.17-17.0 years). Aneurysmal bone cyst of the head and neck region is a rare condition that should be considered in the differential diagnosis of bony, vascular lesions presenting in the aforementioned locations. Since aneurysmal bone cyst of the head and neck region can present as a rapidly growing, expansive and destructive lesion, it is crucial that clinicians are aware of this entity so that patients are accurately diagnosed and treated.
Collapse
Affiliation(s)
- Jordan Richardson
- Michigan State University College of Osteopathic Medicine, East Lansing, MI 48824, United States.
| | - Eric Litman
- Michigan State University College of Osteopathic Medicine, East Lansing, MI 48824, United States.
| | - Dani Stanbouly
- Columbia University College of Dental Medicine, New York, NY 10032, United States.
| | - Kevin C Lee
- Division of Oral and Maxillofacial Surgery, NewYork-Presbyterian/Columbia University Irving Medical Center, New York, NY 10032, United States.
| | - Elizabeth Philipone
- Division of Oral & Maxillofacial Pathology, NewYork-Presbyterian/Columbia University Irving Medical Center, New York, NY 10032, United States.
| |
Collapse
|
6
|
Asi KW, Abdelmeguid A, Bell D, Hanna EY. Massive aneurysmal bone cyst of the skull base treated with denosumab. Head Neck 2018; 40:E107-E113. [DOI: 10.1002/hed.25438] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Accepted: 08/22/2018] [Indexed: 01/30/2023] Open
Affiliation(s)
- Karim W. Asi
- Department of Head and Neck SurgeryThe University of Texas MD Anderson Cancer Center Houston Texas
| | - Ahmed Abdelmeguid
- Department of Head and Neck SurgeryThe University of Texas MD Anderson Cancer Center Houston Texas
| | - Diana Bell
- Department of PathologyThe University of Texas MD Anderson Cancer Center Houston Texas
| | - Ehab Y. Hanna
- Department of Head and Neck SurgeryThe University of Texas MD Anderson Cancer Center Houston Texas
| |
Collapse
|
7
|
Lee HS, Koh YC, Roh HG, Park HK, Kim SY. Secondary Aneurysmal Bone Cyst in a Craniofacial Fibrous Dysplasia: Case Report. Brain Tumor Res Treat 2018; 6:86-91. [PMID: 30381923 PMCID: PMC6212691 DOI: 10.14791/btrt.2018.6.e15] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 09/22/2018] [Accepted: 09/28/2018] [Indexed: 12/13/2022] Open
Abstract
Aneurysmal bone cyst (ABC) is a rare non-neoplastic bone lesion that involves mostly the long bones and vertebrae and may occur very rarely in the craniofacial bones. ABCs may occur as secondary bony pathologies in association with various benign and malignant bone tumors and with fibrous dysplasia (FD). FD is a common non-neoplastic bony pathology mostly affecting craniofacial bones. Secondary ABC occurring in craniofacial FD is extremely rare, with only approximately 20 cases reported in the literature to date. Here, we report on a case of secondary ABC in a 25-year-old woman who has had a craniofacial deformity for over 10 years and who presented to us with a rapidly growing painful pulsatile mass in the right frontal region that began over 2 months prior to admission. On thorough examination of computed tomography and magnetic resonance imaging brain scans taken at two-month interval, an aggressive, rapidly enlarging ABC, arising from the right frontal FD, was diagnosed. The patient underwent preoperative embolization followed by gross total resection of the ABC and cranioplasty. The 6-month follow up showed no recurrence of the ABC, nor was any progression of the FD noticed.
Collapse
Affiliation(s)
- Hyun Seok Lee
- Department of Neurosurgery, Konkuk University Medical Center, Seoul, Korea
| | - Young Cho Koh
- Department of Neurosurgery, Konkuk University Medical Center, Seoul, Korea.
| | - Hong Gee Roh
- Department of Radiology, Konkuk University Medical Center, Seoul, Korea
| | - Hyung Kyu Park
- Department of Pathology, Konkuk University Medical Center, Seoul, Korea
| | - Soo Yeon Kim
- Department of Neurosurgery, Konkuk University Medical Center, Seoul, Korea.
| |
Collapse
|
8
|
Hermann AL, Polivka M, Loit MP, Guichard JP, Bousson V. Aneurysmal bone cyst of the frontal bone - A radiologic-pathologic correlation. J Radiol Case Rep 2018; 12:16-24. [PMID: 30651914 DOI: 10.3941/jrcr.v12i7.3344] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We present a case of 27-year-old female who presented for a progressive frontal swelling with ipsilateral headache. Subsequent CT scan revealed an extradural and expansile multiloculated mass with thin and strongly enhanced septations and MRI evaluation showed internal hyperintensity on T2 with no restriction of diffusion and confirmed the multiple cystic spaces with enhancing septations and rare hemorrhagic fluid-fluid levels. Surgery was performed and diagnosis of aneurysmal bone cyst was made on frozen section. Identification of USP6 fusion gene by in situ hybridization technique permitted to confirm the diagnosis of primary ABC. Although aneurysmal bone cyst (ABC) of the skull is a very rare entity and accounts for 2-6% of all ABCs, we should think about it in front of osteolytic and cystic skull changes even with very few fluid-fluid levels. Following description of our case and differential diagnoses, we conduct a literature review of skull ABCs imaging characteristics and discuss the interest of USP6 rearrangement identification.
Collapse
Affiliation(s)
- Anne-Laure Hermann
- Department of Skeletal and visceral Radiology, Hôpital Lariboisière, Paris, France
| | - Marc Polivka
- Department of Anatomopathology, Hôpital Lariboisière, Paris, France
| | | | | | - Valérie Bousson
- Department of Skeletal and visceral Radiology, Hôpital Lariboisère, Paris, France
| |
Collapse
|
9
|
Francies O, Makalanda L, Paraskevopolous D, Adams A. Imaging review of the anterior skull base. Acta Radiol Open 2018; 7:2058460118776487. [PMID: 29872547 PMCID: PMC5977432 DOI: 10.1177/2058460118776487] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 04/17/2018] [Indexed: 12/28/2022] Open
Abstract
The anterior skull base (ASB) is intimately associated with the unique soft tissue subtypes of the nasal cavity, paranasal sinuses, orbits, and intracranial compartment. Pathology involving the ASB is rare but the causes are manifold and can be broadly subdivided into those intrinsic to the skull base and processes extending from below or above. Sinonasal pathology is the most commonly encountered and poses significant management challenges that rely heavily on accurate interpretation of the radiological findings. We illustrate the normal anatomy of the ASB and present a cross-sectional imaging review of the pathological entities that may be encountered, focusing on the specific features that will impact on clinical and surgical management.
Collapse
Affiliation(s)
- Olivia Francies
- Department of Radiology, St Bartholomew's and The Royal London Hospitals, Barts Health NHS Trust, London, UK
| | - Levan Makalanda
- Department of Radiology, St Bartholomew's and The Royal London Hospitals, Barts Health NHS Trust, London, UK
| | | | - Ashok Adams
- Department of Radiology, St Bartholomew's and The Royal London Hospitals, Barts Health NHS Trust, London, UK
| |
Collapse
|
10
|
Abstract
An aneurysmal bone cyst (ABC) is believed to be attributable to intraosseous circulatory disturbance. An ABC is a vascular tumor of the bone caused by bony expansion after partial vascular occlusion and congestion. Most ABCs are found in adolescents (approximately 75% of ABCs are observed in patients under 20 years of age). The most common ABC sites are the long bones of the limbs, the vertebrae, and the cranial bone. Aneurysmal bone cysts in the skull base or ethmoid sinus have been but rarely reported worldwide. The authors report on a patient with a very large ABC in the skull base and the ethmoid sinus; this was successfully managed by a neurosurgeon.
Collapse
|
11
|
Unadkat S, Adams A, Richards P, Bajaj Y. Paediatric aneurysmal bone cyst: not as easy as ABC. J Surg Case Rep 2018; 2018:rjy008. [PMID: 29423170 PMCID: PMC5798087 DOI: 10.1093/jscr/rjy008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Accepted: 01/12/2018] [Indexed: 11/21/2022] Open
Abstract
Aneurysmal bone cysts (ABCs) are expansile cystic lesions that can affect any bone of the body. Whilst these lesions are histologically benign, the lesions are locally aggressive and can affect the integrity of the affected bone as well as surrounding structures. ABCs arising in the head and neck region, particularly the paranasal sinuses are rare and they are limited to case reports in the literature. Due to the proximity of critical anatomical structures and the visual apparatus, the potential complications can be devastating. The present article discusses both the clinical and radiological findings of an ABC arising from the ethmoid sinuses in a 6-year-old child and the potentially challenging diagnosis with its complex ensuing surgical management. The identification of an ABC arising in the paranasal sinuses is both a diagnostic and surgical challenge and ideally requires complex management in a joint paediatric ENT and craniofacial unit.
Collapse
Affiliation(s)
- Samit Unadkat
- Charing Cross Hospital, Imperial College Healthcare, London, UK
| | - Ashok Adams
- The Royal London Hospital, Barts Health NHS Trust, London, UK
| | - Polly Richards
- The Royal London Hospital, Barts Health NHS Trust, London, UK
| | - Yogesh Bajaj
- The Royal London Hospital, Barts Health NHS Trust, London, UK
| |
Collapse
|
12
|
Frontal skull osteoblastoma with aneurysmal bone cyst-like changes associated with trauma during pregnancy: a case report. Acta Neurochir (Wien) 2017; 159:393-396. [PMID: 27853880 DOI: 10.1007/s00701-016-3024-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 11/09/2016] [Indexed: 12/19/2022]
Abstract
We report the case of a large osteoblastoma arising in the frontal bone of a 20-year-old female. The lesion was first noted after a fall, and grew steadily in size following further head injury during pregnancy. Initial plain radiography demonstrated an area of radiolucency, with subsequent cross-sectional imaging revealing the extent of the lesion. Following successful surgical resection, histological features were suggestive of an aggressive osteoblastoma with aneurysmal bone cyst-like changes. We consider the influence of pregnancy and trauma on osteoblastoma behavior.
Collapse
|