Imaging characteristics of sinonasal organized hematoma

Successful Endoscopic Transsphenoidal Approach Treatment of Sphenoid Sinus Organized Hematoma Causing Visual Deficit: A Case Report

Background: Organized hematoma in the sphenoid sinus is rare, but serious complications, such as visual deficits, can occur. Three such case reports have been published previously in the literature; however, none have achieved complete recovery of the vision. Case presentation: A 69-year-old male patient was referred to the ear, nose, and throat department with an expansile soft tissue mass filling the right sphenoid sinus and blurry vision in his right eye. Complete mass removal was achieved by a wide opening of the sphenoid sinus via an endoscopic transsphenoidal approach, followed by cauterization of the feeding artery and coverage by a nasoseptal flap. The patient's vision was restored after the operation, and he declared no visual symptoms until the latest follow-up (one year after the surgery). Conclusions: Complete excision with an endoscopic endonasal transsphenoidal approach can restore visual deterioration caused by a sphenoid sinus organized hematoma.

Pseudo-malignant paranasal invasive aspergillosis showing bone destruction and FDG uptake on PET/CT: A case report

RATIONALE

Aspergillosis is a rare disease that often occurs in patients with diabetes mellitus or compromised hosts. This study describes a 60-years-old woman with unusual pseudo-malignant paranasal invasive aspergillosis with 18F-fluorodeoxyglucose (18F-FDG) uptake treated by endoscopic sinus surgery. To the best of our knowledge, there are few reported cases of paranasal fungal infection with 18F-FDG uptake.

PATIENTS CONCERNS

A 60-years-old woman was presented with headache and nasal obstruction.

DIAGNOSES

Computed tomography (CT) showed a shadow with bone destruction in the sinus cavity and accumulation of 18F-FDG uptake. The patient was diagnosed with a malignant tumor or pseudo-malignant paranasal invasive aspergillosis.

INTERVENTIONS

The patient underwent endoscopic sinus surgery; no neoplastic lesions were detected in the areas with CT shadows. All the observed fungal mass reservoirs were removed.

OUTCOMES

The patient remained hospitalized for 1 week after the surgery with no significant postoperative abnormalities. There was no recurrence of the disease for 6 months, and the patient's symptoms resolved, indicating a good course of follow-up.

LESSONS

Invasive aspergillosis should be considered a differential disease when positron emission tomography (PET)/CT scans show FDG uptake, CT shows bone destruction, and T2-weighted MRI scans show a low signal.

Endoscopic Surgical Treatment of Maxillary Sinus Organized Hematoma

OBJECTIVE

The purpose of this study was to analyze the clinical characteristics and treatment outcomes of patients who underwent endoscopic surgery for a maxillary sinus organized hematoma during a 15-year period in our hospital.

METHODS

The authors analyzed 25 patients who underwent endoscopic surgery for a maxillary sinus organized hematoma from January 2004 to December 2019.

RESULTS

Twenty-five patients with a maxillary sinus organized hematoma underwent endoscopic surgical treatment and complete removal of the maxillary sinus organized hematoma was achieved in all cases. The main symptoms were nasal bleeding in 14 patients, followed by a nasal obstruction in nine, and facial swelling in 2. Of the 25 patients, 13 underwent endoscopic medial maxillectomy and 12 underwent endoscopic sinus surgery. There were no major surgical complications or recurrences.

CONCLUSION

The authors demonstrated that endoscopic surgery is a safe and reliable treatment method for a maxillary sinus organized hematoma.

Organised hematoma mimicking sino-nasal malignancy in patients post-radiotherapy

INTRODUCTION

Organised hematoma (OH) in the para-nasal sinus and nasal cavity is a rare, non-neoplastic, benign disease which can be locally aggressive. In clinical practice, OH is easily misdiagnosed as malignancy and over-treated.

CASE SUMMARY

These patients with OH had a common history of malignant neoplasms post-radiotherapy, including two cases of nasopharyngeal carcinoma and one case of tonsil cancer with jaw osteosarcoma. All of the patients presented with symptoms of epistaxis and blood-tinged rhinorrhea. All of the patients received endoscopic endonasal surgery under navigation.

DISCUSSION

All of the patients had a good recovery after surgery. There's no recurrence after follow-up at 6 months. We therefore hypothesised that radiotherapy could be a cause of the OH. Although OH is uncommon and difficult to diagnose, a history of malignancy and imaging features with appropriate treatment are key.

Haemorrhagic nasal polyp mimicking melanoma in an 83-year-old on rivaroxaban

An 83-year-old woman presented with rapid onset unilateral nasal obstruction after sneezing. She had a history of hypertension and atrial fibrillation, and was on rivaroxaban. Examination revealed a dark red polypoidal lesion completely obstructing the left nostril. She underwent CT and MRI, and proceeded to urgent excision biopsy of the lesion. Intraoperative appearance was in keeping with a haemorrhagic polyp arising from the nasal septum. Histology revealed haematoma within a layer of nasal mucosa. There was no evidence of haemangioma underlying the polyp. Our literature search has identified this case as the first described haemorrhagic polyp of the nasal septum. It is likely that rivaroxaban contributed to the formation of this haemorrhagic polyp, and it is important to differentiate benign haemorrhagic lesions from malignant conditions such as melanoma. Similar cases may become more common in the future as the proportion of the population on anticoagulants increases.

Organized Hematoma of the Sphenoid Sinus With Acute Blindness: Insight Into Pathogenesis of Disease

Sinonasal organized hematomas (OHs) are rare lesions that primarily localize to the maxillary sinus. The rate of growth of these masses has not been described in the literature. We present a case of a 59-year-old gentleman with polyostotic fibrous dysplasia who presented with acute loss of vision in the left eye from an expanding OH of the sphenoid sinusitis. After expanded endonasal, transpterygoid approach and debulking, patient experienced significant vision improvement. Close follow-up imaging preoperatively allowed radiologic documentation of the rate of OH growth and this is presented in detail.

Hypointense head and neck lesions on T2-weighted images: correlation with histopathologic findings

PURPOSE

On T2-weighted images, most solid lesions exhibit nonspecific intermediate signal intensity, whereas most cystic lesions exhibit marked hyperintensity. In contrast, on T2-weighted images, a relatively small number of lesions exhibit hypointensity. This review aimed to differentiate, according to the histopathologic findings, head and neck lesions showing hypointensity on T2-weighted images.

METHODS

In this review article, hypointense head and neck lesions on T2-weighted images are classified into the following nine categories: calcified or osseous lesions, granulomatous lesions, fibrous lesions, mucous- or proteincontaining lesions, hemosiderin-containing lesions, melanin-containing lesions, thyroglobulin-containing lesions, rapid blood flow, and air-filled spaces.

CONCLUSION

Knowledge regarding hypointense head and neck lesions on T2-weighted images allows radiologists to make accurate differential diagnoses. Key points • Hypointense head and neck lesions on T2-weighted images include calcified or osseous lesions, granulomatous lesions, fibrous lesions, mucous- or protein-containing lesions, hemosiderin-containing lesions, melanin-containing lesions, thyroglobulin-containing lesions, rapid blood flow, and air-filled spaces. • Radiologists should recognize the hypointense head and neck lesions on T2-weighted images for the final correct diagnosis, resulting in appropriate patient management.

MR and CT imaging features of sino-nasal organized hematomas

AIM

To describe the MR and CT imaging features of organized hematomas [OH].

METHODS

A retrospective analysis of MR imaging and CT of eight patients [6 male, 2 females; age range is 6-86 years] with pathological proven OH was performed. Routine contrast MR and CT scan were done for all patients, and diffusion-weighted imaging and dynamic contrast CT were done for only five patients. Imaging analysis was done for the signal intensity, the enhancement pattern at MR imaging, the ADC value at DWI, bone remodeling at CT, and the neo-vascularization at dynamic contrast CT.

RESULTS

OH revealed T2 hypo-intense of the matrix in all patients with complete [n = 3] and incomplete [n = 5] marginal hypo-intensity rim. The lesions revealed a frond-like pattern of contrast enhancement of the central part of the lesion that associated with a peripheral rim of contrast enhancement. OH revealed unrestricted diffusion with high ADC value [1.7-2.5 × 10^-3 cm²/s] in 5 patients. CT scan showed geographic bone remodeling and thinning of the nasal turbinates, and the sinus wall and contrast CT showed neo-vascularization with frond-like branching arteries of the central part of the lesions in five patients.

CONCLUSION

We conclude that MR and CT imaging findings can help in the diagnosis of OH.

Sinonasal organising haematoma - a little known entity

Introduction

Sinonasal organising haematoma is a recently described, rare, benign inflammatory condition, which closely resembles malignancy in its clinical presentation.

Objective

To describe the clinical features of organising haematoma and to review the evolution of surgical options successfully used.

Methods

A retrospective review of charts of all patients with a histopathological diagnosis of sinonasal organising haematoma was performed.

Results

Six (60%) of the 10 patients were male with a mean age of 47.4 years. All patients had unilateral disease with recurrent epistaxis as the presenting symptom. Maxillary sinus was the most commonly involved sinus. There was no history of trauma in any of the patients. Hypertension (80%) was the most commonly associated comorbidity. Contrast-enhanced CT scan of the paranasal sinuses showed heterogeneous sinus opacification with/without bone erosion. Histopathological examination was diagnostic. Complete endoscopic excision was done in all patients resulting in resolution of the disease.

Conclusion

Awareness of this relatively new clinical entity and its evaluation and treatment is important for otolaryngologists, maxillofacial surgeons and pathologists alike. Despite the clinical picture of malignancy, histopathological features of benign disease can safely dispel such a diagnosis.

Organized hematoma of temporomandibular joint

Organized hematoma is a pseudo-tumorous lesion mostly occurs at sinonasal cavity and often confused with malignant neoplasm. The initiation of this lesion is blood accumulation, probably due to trauma, and this hematoma develops into organized hematoma as it encapsulated with fibrous band and neo-vascularized. Since it is uninformed at temporomandibular joint (TMJ) region, imaging diagnosis might be challenging. Also, delayed detection of mass involving TMJ is not uncommon due to confusion with joint disorder. Thus, this report introduced the rare pathology, organized hematoma on TMJ with advanced imaging features. Also, diagnostic point for early detection was described for the TMJ tumors and pseudo-tumors considering complexity of surgical intervention in this region.

Three cases of organized hematoma of the maxillary sinus: clinical features and immunohistological studies for vascular endothelial growth factor and vascular endothelial growth factor receptor 2 expressions

Objectives. Organized hematoma (OH) is a rare, nonneoplastic, hemorrhagic lesion causing mucosal swelling and bone thinning, mainly in the maxillary sinus. We aimed to clarify the clinical presentation and treatment of OH. Methods. Three cases of maxillary sinus OH and a literature review are presented. Results. Three men aged 16–40 years complained of nasal obstruction, frequent epistaxis, and/or headache. Clinical and radiological examinations revealed a maxillary sinus OH. They were cured in a piecemeal fashion via endoscopic middle meatal antrostomy. Furthermore, vascular endothelial growth factor and its receptor were expressed in the lesion. Conclusions. The pathogenesis of OH is unclear and it presents various histological and imaging findings; however, it is not difficult to rule out malignant tumors. Minimally invasive surgery such as endoscopic sinus surgery can cure it completely. Thus, it is important to determine the diagnosis using CT and MRI and to quickly provide surgical treatment.

Sinonasal organized hematoma: Clinical features of seventeen cases and a systematic review

OBJECTIVES/HYPOTHESIS

Organized hematoma (OH) is a rare non-neoplastic disease. We studied the clinical characteristics of 17 patients with sinonasal OH and those of 75 cases in the English literature.

STUDY DESIGN

Retrospective review of medical records and systematic review of the literature on OH.

METHODS

Comprehensive review of the English-language literature on OH was performed. We screened all eligible cases based on initial features, and 75 eligible cases found in 15 publications were analyzed. We also retrospectively analyzed and compared medical records of 17 patients diagnosed with pathologically proven sinonasal OH. Data such as demographics, clinical characteristics, pathologic features, radiologic findings, treatment modalities, and follow-up results were compared to the 75 previously mentioned cases.

RESULTS

Fifteen cases involved the maxillary sinus, one case involved the frontal sinus, and one case involved the sphenoid sinus. There were six patients over 60 years old, and all were taking an antiplatelet agent. The paranasal sinus computed tomography (CT) of seven patients showed bony destruction of the involved sinus. A review of the available literature revealed mostly similar results with our cases, except for the proportion of patients taking aspirin (5.3%) and sex distribution (male:female = 49:25).

CONCLUSIONS

We reported 17 cases of OH, including a case of frontal sinus and a case of sphenoid sinus lesion. A large proportion of OH patients had bony destruction of the affected sinus on CT. In these patients, a careful diagnosis should be made to distinguish them from a malignant tumor or other expansile diseases.

LEVEL OF EVIDENCE

4.