Organizing hematomas are rare benign tumors and appear as masses that are composed of neovascularization with organizing fibrotic tissue in a hematoma. Although histologically benign, this condition may be clinically progressive. Radiological findings can range from a benign appearance to a more aggressive process, including bony erosion. Organizing hematoma of the maxillary sinus is a rare clinical disease. To our knowledge, only a few cases have previously been published, and most were without bleeding history and disorders. Until now, all of the reports about this lesion have discussed the clinical course, and no previous report has closely considered pathologic findings and pathogenesis. We report three cases of organizing hematoma of the maxillary sinus presenting with an enlarging maxillary sinus mass.
Hematoma* ; Hemorrhage ; Maxillary Sinus* ; Pathology

Objectives: Review the maxillary sinus of 12 operated patients by surgical evaluation, Nasal-sinus endoscopy and histopathological tests for finding the fiber tissue whether distributes the maxillary sinus mucosa or not after the radical operation. Results: there is a regeneration of maxillary sinus mucosa following radical operation. This mucosa distributed the infected mucosa that to be removed. The epithelium was regenerated well (8/12 cases) and poor (4/12 cases). The intestinal mucosa was regenerated well (6/12 cases) and poor (6/12 cases)
Maxillary Sinus ; pathology ; surgery ; Reoperation

BACKGROUND AND OBJECTIVES: When performing a revision endoscopic sinus surgery, operators should pay close attention due to the altered sinonasal anatomy or defects of anatomical landmarks. Careful preoperative evaluation of altered anatomy is important, however, little has been reported on its structural changes. We investigated status of anatomical structures and mucosal pathology by reviewing OMU CT in revision sinus surgeries. MATERIALS AND METHODS: A total of 117 operated sides (right: 59, left: 58) from 62 patients who received revision endoscopic sinus surgeries were evaluated. They had history of previous sinus surgeries such as Caldwell-Luc operation, polypectomy, or endoscopic sinus surgery. We investigated the following 5 parameters by reviewing preoperative OMU CT; Sinus mucosal pathology, bony thickening, absence of superior or middle turbinate, structural changes of superior or middle turbinate, and defects of anatomical landmarks. RESULTS: Sinus mucosal pathology was most commonly found in the maxillary sinuses, and was followed by the anterior ethmoid, the posterior ethmoid, the frontal, and the sphenoid sinuses. Out of 117 sides, 47 showed bony thickening and 7 showed absence of superior or middle turbinate. Eleven revealed structural changes in the superior or middle turbinate, and three showed defects in the lamina papyracea. However, there was no complete absence of the middle or superior turbinates, all of which were partially preserved. CONCLUSION: Significant bony thickening, defects or changes of anatomical structures and associated mucosal pathology were frequently found in revision endoscopic sinus surgeries. Preoperative review of OMU CT, identification of structural changes, and close attention during surgery would be necessary.
Humans ; Maxillary Sinus ; Pathology ; Sinusitis ; Sphenoid Sinus ; Turbinates

Humans ; Maxillary Sinus Neoplasms ; pathology ; Myoepithelioma ; pathology ; Paranasal Sinuses ; pathology

Adult ; Female ; Granuloma, Plasma Cell ; pathology ; Humans ; Maxillary Sinus ; pathology ; Paranasal Sinus Diseases ; pathology

OBJECTIVE: Through 3.0 T MRI study the ear and sinus lesions of patients with acute carbon monoxide poisoning. METHOD: From 2012 to 2015 collected the MRI images of the 45 patients with acute carbon monoxide poisoning, observe their changes of middle ear and mastoid and sinus imaging. RESULT: The middle ear injury of mastoid 41 cases (91.1%), 22 cases (48.9%) of maxillary sinus injury, ethmoid sinus injury in 20 cases (44.4%), sphenoid sinus 9 cases (20.0%), 5 cases (11.1%) of frontal sinus injury. Carbon monoxide poisoning patients according to clinical symptoms can be divided into light, medium and heavy 3 groups, observing the ear sinus damage degree for comparison between groups, found to have significant differences (P < 0.05). CONCLUSION The patients with acute carbon monoxide poisoning ear and sinus injury should cause the attention of the medical staff, MRI can reflect people's ears from the details and the damage degree of the sinuses.
Carbon Monoxide Poisoning ; diagnosis ; Ear, Middle ; pathology ; Ethmoid Sinus ; pathology ; Frontal Sinus ; pathology ; Humans ; Magnetic Resonance Imaging ; Maxillary Sinus ; pathology ; Paranasal Sinuses ; pathology ; Sphenoid Sinus ; pathology

BACKGROUND AND OBJECTIVES: A coronal section computerized tomography (CT) is essential for the diagnosis of paranasal sinusitis, especially in the evaluation of the ostiomeatal unit. Although the coronal scan is preferred to the axial scan, the role of the axial scan during endoscopic sinus surgery has not been thoroughly examined. The aim of this study is to compare the advantages and disadvantages of coronal and axial scans in the paranasal sinuses. MATERIALS AND METHODS: Selected for study were the coronal and axial scans of 30 preoperative sinus CTs showing minimal sinus pathology. The rates of detecting 15 anatomic structures in the coronal and axial sections were analyzed across 60 sides. RESULTS: The coronal scan was superior to the axial scan in detecting eight normal structures, including the anterior ethmoid artery, the opening of the maxillary sinus and the superior meatus (p<0.05). The axial scan was useful in showing the vertical portion of the 3rd basal lamella and the opening and the anterior wall of the sphenoid sinus (p<0.05). CONCLUSION: The coronal scan is more informative than the axial scan but has limitations in showing the structures lying on the coronal plane. The axial scan plays a complementary role in covering this limitation. Together, the coronal and axial sections of a sinus CT can help the surgeon to understand the three dimensional structure of the paranasal sinus before endoscopic sinus surgery.
Arteries ; Deception ; Diagnosis ; Maxillary Sinus ; Paranasal Sinuses ; Pathology ; Sinusitis ; Sphenoid Sinus

A 8-years-old male patient with a bulge of left eye ball for one mongth was hospitalized. The inspection of the patient showed the movement on the left side of the lateral nasal wall and a narrow nasal cavity. Orbital CT showed that the left orbital ethmoid sinus, maxillary sinus cyst, left orbital, sphenoid sinus, nasal cavity were damaged. A resection with the combination of approaches including the left maxillary sinus, the ethmoid sinus, and the sphenoid sinus osteofibroma was performed. 5 days after the operation, the nasal packing material was removed and 7 days after the operation the stiches were removed. The recovery of the patient was satisfied after the operation and no recurrence was observed during one and half years follow up.
Child ; Ethmoid Sinus ; pathology ; Humans ; Male ; Maxillary Sinus ; pathology ; Nasal Cavity ; pathology ; Nasal Surgical Procedures ; Ossification, Heterotopic ; diagnosis ; surgery ; Paranasal Sinus Diseases ; diagnosis ; surgery ; Sphenoid Sinus ; pathology

Adult ; Carcinoma, Small Cell ; pathology ; Ethmoid Sinus ; pathology ; Frontal Lobe ; pathology ; Humans ; Male ; Maxillary Sinus Neoplasms ; pathology ; Paranasal Sinus Neoplasms ; pathology ; Skull Base ; pathology

Adult ; Female ; Humans ; Maxillary Sinus Neoplasms ; pathology ; Nasal Cavity ; pathology ; Oxyphil Cells ; Papilloma ; pathology