A 47-year-old Japanese woman presented with a 1-year history of right-sided epiphora. On initial consultation, the patient had a high right tear meniscus height. CT images revealed bilateral soft tissue opacification in the nasal cavity and maxillary, frontal, and ethmoid sinuses. The lesion in the right nasal cavity and maxillary sinus involved the right lacrimal sac and nasolacrimal duct. Blood test results showed elevated eosinophil count. Endoscopic sinus surgery and excisional biopsy of the nasolacrimal duct were performed. Histopathological examinations of the excised right nasolacrimal duct and nasal polyps from the nasal cavity and maxillary sinus showed high levels of eosinophilic inflammatory infiltrates. The definite diagnosis of eosinophilic chronic rhinosinusitis was made, based on clinical, radiological, and histopathological findings. At 1.5-year follow-up, tear meniscus height was normal, the lacrimal drainage system remained patent, and the rhinosinusitis did not recur.

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This case report describes a rare incident of fluid exhibiting retrograde flow from the nasopharynx through the nasolacrimal duct and accumulating within the eye guard while under general anesthesia. The patient was in a steep Trendelenburg position for several hours and received multiple liters of intravenous fluid. The patient did not have a history of sinusitis, sinus surgery, cocaine use, dacryostenosis and dacryocystitis, or nasolacrimal duct irrigation and probing. This case provides insight into the potential ophthalmic implications of surgical and anesthetic management. While the patient fortunately had no complications, this case also underscores the importance of intraoperative vigilance.

BACKGROUND: Large B-cell lymphoma (LBCL) with interferon regulatory factor 4 (IRF4) rearrangement (LBCL-IRF4) is a rare subtype of LBCL, with a high prevalence in Waldeyer\'s ring as well as the neck, head and gastrointestinal lymph nodes.
METHODS: A patient with 2-month clinical symptoms of nasal obstruction and facial swelling was reported in this short review. A nasal endoscopy examination revealed a neoplasm in the inferior nasal meatus. Both CT and enhanced MRI showed that a soft tissue occupied the nasolacrimal duct, with bone destruction, and extended into the left nasal cavity and left lacrimal gland area. Then, a biopsy of the neoplasm in the inferior nasal meatus was performed.
RESULTS: HE staining results showed that neoplastic cells presented diffuse growth patterns, abundant cytoplasm, vacuole shape, lightly stained nuclei, and irregular nuclear membrane. Immunohistochemistry staining results revealed MUM1(+), Bcl6(+), CD20(+), CD79α(+), and CD10(+). FISH analyses detected positive IRF4 rearrangement. LBCL-IRF4 was diagnosed in the patient. The patient received treatment with four cycles of R-CHOP and two times of rituximab, followed up for 2 years, and finally got complete remission.
CONCLUSIONS: For the first time, we summarize the imaging and pathological features, drug treatment, and curative effect of LBCL-IRF4 in the nasolacrimal duct.

OBJECTIVE: To evaluate the incidence and risk factors for inflammatory conditions among patients with primary acquired nasolacrimal duct obstruction (PANDO).
METHODS: A retrospective case-control study was conducted among patients of Clalit Health Services (CHS) in Israel from 2001 to 2022. For each case, three controls were matched among all CHS patients according to year of birth, sex, and ethnicity. Differences in demographic characteristics, ocular surface, eyelid, upper airway, and systemic diseases were assessed between the groups, and odds ratios (OR) were calculated.
RESULTS: A total of 60,726 patients diagnosed with PANDO were included. The average age of PANDO patients was 63 ± 18 years, 63% were female. Significant associations were found between PANDO and various ocular surface and eyelid conditions, including chronic conjunctivitis (OR 2.96, 95% CI [2.73-3.20]), vernal keratoconjunctivitis (OR 2.89, 95% CI [2.45-3.29]), and blepharitis (OR 2.75, 95% CI [2.68-2.83]). There was a significant association with various upper airway conditions, including rhinitis (OR 1.62, 95% CI [1.58-1.66]), chronic sinusitis (OR 1.71, 95% CI [1.62-1.80]), and deviated nasal septum (OR 1.76, 95% CI [1.69-1.84]). Association was also observed with systemic conditions, including asthma (OR 1.34, 95% CI [1.27-1.41]) and atopic dermatitis (OR 1.36, 95% CI [1.32-1.41]).
CONCLUSIONS: Ocular surface, eyelid, upper airway, and systemic inflammatory-related diseases were found to be associated with PANDO, supporting the theory that inflammation has a prominent role in the pathophysiology of PANDO.

BACKGROUND: This paper reports a case of chronic dacryocystitis due to nasal stones.
METHODS: An 84-year-old male patient was admitted to the hospital with chronic dacryocystitis of the right eye due to tearing and purulent discharge from the right eye for more than 1 month. Antibiotic treatments such as gatifloxacin eye drops were given at other hospitals but did not relieve the symptoms. A computed tomography(CT) scan of the lacrimal duct in our department showed a high-density shadow in the right lacrimal sac area, hypertrophy of the right inferior turbinate, and many nasal calculi in the nasal cavity. The patient was transferred to our otolaryngology department for further treatment, and nasal stones were removed under nasal endoscopy. Three days after surgery, the symptoms affecting the patient\'s right eye gradually resolved. One month after surgery, the patient underwent a follow-up examination in the ophthalmology clinic; there was no lacrimal purulent discharge from the right eye, and the lacrimal duct could be flushed smoothly.
CONCLUSIONS: Chronic dacryocystitis is often caused by primary nasolacrimal duct obstruction. Cases of chronic dacryocystitis caused by secondary nasolacrimal duct obstruction due to nasal stones are rare in the clinic. This case can serve as a reference for the clinical diagnosis and treatment of chronic dacryocystitis.

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OBJECTIVE: To report management of a series of patients with primary malignant lacrimal sac tumors and to compare these results to the previously published literature.
METHODS: A total of 27 patients with pathologically confirmed primary malignant lacrimal sac lesions were enrolled into this study. Pathological classifications, clinical characteristics, various treatment modalities and follow-up time, including tumor recurrence, were documented. The outcome measures included overall survival, progression-free survival, and median survival time.
RESULTS: Among 27 eligible cases, 33.33% (9/27) of the tumor was non-Hodgkin B-cell lymphoma, and 33.33% (9/27) was squamous cell carcinoma; both were the most common tumor in this series, followed by adenocarcinoma 18.52% (5/27), then melanoma 7.41% (2/27). Treatment modalities included surgery, radiotherapy, and/or chemotherapy, the overall survival rate of 27 patients was 70.37%, with a median follow-up of 45 months (range: 7 mo-16 y), 8 patients had died from metastatic disease, but 13 patients remained without evidence of recurrent tumor. The 5-year overall survival and progression-free survival for all cases were 73.33% and 66.67%, respectively. The median survival time for 5 deceased patients with interstitial brachytherapy was 98 months, and 5-year survival rate was 60%.
CONCLUSIONS: In this series, among primary malignant lacrimal sac tumors, the proportion of lymphoma had increased when compared with the previously published literature, and multidisciplinary therapy may lead to a good prognosis in the majority of patients with the tumors and patients may benefit more from interstitial brachytherapy than external beam radiotherapy.

Primary lacrimal sac melanoma (PLSM) is exceedingly rare and associated with high morbidity and mortality. Unfortunately, PLSM often presents insidiously resulting in delayed detection and poor prognosis. A 69-year-old Black man was suspected of having a lacrimal sac tumour following presentation with a left sided watery eye, bloody tears, and a lacrimal mass. Due to the patient\'s implantable pacemaker, defibrillator, and high anticoagulation, an ultrasound-guided FNAC was performed instead of incisional biopsy, revealing a PLSM. Diagnosis was confirmed following complete tumour resection with free flap reconstruction and neck dissection. Unfortunately, disease progression ensued despite further neck dissection and three cycles of both pembrolizumab and iplimumab. This is the first description of FNAC to accurately diagnose PLSM and highlights its use as an accurate, rapid, and minimally invasive technique that may allow an earlier screening diagnosis of lacrimal sac tumours. We also discuss the outcome of immunotherapy in recent similar cases.