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Objective: Silent sinus syndrome (SSS) and chronic maxillary atelectasis (CMA) are unusual conditions having subtle symptoms with a possible progressive evolution. They are particularly infrequent in the pediatric population. Our objective was to review our experience with pediatric patients having SSS or CMA, and to review all cases involving patients under 14 years of age reported in the literature., Methods: A retrospective review of 6 patients diagnosed with SSS or CMA surgically treated from 2001 to 2014 was carried out. All cases reported in literature were reviewed., Results: All patients underwent functional endoscopic sinus surgery with an improvement in symptoms after surgery. Diplopia disappeared in two patients who presented with it and enophthalmos improved in all five patients presenting with it. Only one patient out of four presenting with headache had a persistence of the symptoms which were, however, milder than they had been preoperatively. Endoscopic examination demonstrated a reventilated maxillary sinus in all cases. A radiological examination at follow-up was performed in 5 cases and demonstrated a reexpansion of the maxillary sinus as compared to the contralateral side in all patients except one. None of the patients required an orbital floor reconstruction. Eleven similar cases reported in the literature were analyzed and compared., Conclusion: Endoscopic uncinectomy and middle meatal antrostomy should be the treatment of choice for these conditions in patients presenting with enophthalmos and/or hypoglobus and symptoms related to it. Orbital floor reconstruction should be performed as a delayed procedure only in selected cases. Chronic maxillary atelectasis or SSS should be considered as a possible cause of persistent headache of unknown origin in pediatric patients., (Copyright © 2017 Elsevier B.V. All rights reserved.)

Objective: Pediatric periorbital cellulitis represents a common disease complicating a nasal infection., Methods: A ten-year retrospective review of fifty-seven children admitted to our institution with the diagnosis of periorbital cellulitis as a complication of sinus infections was carried out., Results: The age varied from one month to eleven years (mean 3.9 years). Thirty-five were males (62%), while twenty-two were females (38%). Nine out of fifty-seven (15.8%) presented exophthalmos associated with eyelid erythema and edema, while the rest suffered mainly from eyelid erythema and edema. Twenty-two patients complaining of exophthalmos or not responding to medical therapy within 48 h were assessed with a computed tomography scan (38.6%). A subperiosteal orbital abscess was detected in nine cases and these patients underwent surgical drainage (15,8%). Recurrence of orbital infection occurred in three cases (5.3%)., Conclusions: Medical management is the main treatment for both preseptal and postseptal orbital cellulitis. Nevertheless, there is no universally accepted guideline for the treatment of subperiosteal abscesses and each case should be treated accordingly. Urgent surgical drainage should be considered in cases not responding to adequate medical management, or those cases presenting visual deterioration., (Copyright © 2017 Elsevier B.V. All rights reserved.)

Introduction: The pediatric subperiosteal abscess is considered an infectious process characterized by an abscess pocket localized between the lamina papiracea and the periorbita. Usually the surgical management is used to drain the collection of pus., Methods: Between January 2006 and January 2009, 10 patients of age under 18-year-old underwent through a transnasal endoscopic approach at the University of Bologna, Sant'Orsola Malpighi Hospital for the treatment of a subperiosteal orbital abscess. All these patients were taken to the operative room in order to drain the abscess only after that the CT scan was accomplished and it demonstrated the presence of a subperiosteal orbital abscess., Results: The transnasal endoscopic approach was used alone in 9 cases while it was associated with an external approach in one case for the treatment of a superolateral based subperiosteal orbital abscess. In all cases the exudate was obtained during the surgical procedure for the microbiological examination, although only 2 out of 10 cases had positive abscess cultures for Streptococcus pneumoniae., Conclusions: The transnasal endoscopic approach is an effective surgical treatment to drain the collection of pus in all medially based subperiosteal orbital abscess, while it can be associated with an external approach for the treatment of a superolateral based subperiosteal orbital abscess.