To describe a novel minimally invasive surgical approach to treatment of a nasolacrimal duct cyst in a dog and outcome. A 10-year-old, male entire, Springer Spaniel with a chronic right-sided maxillary swelling and associated right eye epiphora and sneezing. Computed tomography with dacryocystography confirmed a cystic structure and destruction of the right maxilla and zygomatic bone with invasion of the nasal cavity. Obstruction of the nasolacrimal duct was confirmed. Rhinoscopy was performed allowing visualization of the ventromedial wall of the cyst. Under direct visualization, dacryocystorhinostomy was performed and the wall of the cyst was ablated with the aid of a thulium laser fiber. No intraoperative complications occurred during the procedure. Full resolution of clinical signs was noted within 2 weeks of treatment. No recurrence had occurred on long-term follow-up at 32 months. Laser-assisted dacrocystorhinostomy under direct visualization was successful in the treatment and resolution of a nasolacrimal duct cyst (dacryops) in this case.

Bilateral congenital dacryocystocele is a rare, congenital anomaly of the lacrimal drainage system in a newborn. Herein, we report a case of infected congenital bilateral dacryocystocele in a newborn. The case was determined to be a bilateral dacryocystocele after an endoscopic examination and confirmed by a magnetic resonance imaging (MRI) scan. Awareness of this entity is important, as it may cause a delay in referral to an otorhinolaryngology (ORL) specialist and subsequently, a delay in diagnosis. Therefore, it should be considered when there is unusual swelling present between the eyes of a newborn and it does not improve with medical treatment.

To describe the use of an endoscope to assist in performing minimally invasive dacryocystorhinostomy in a dog to successfully manage a nasolacrimal duct cyst (dacryocyst). A 4-year-old female spayed American Staffordshire Terrier with chronic epiphora and swelling ventromedial to the nasal canthus of the right eye and reverse sneezing. Computed tomography revealed a fluid-filled cystic lesion of the right nasolacrimal duct with extensive nasal extension and secondary obstructive frontal sinusitis. Aspiration of serosanguinous fluid with no growth of microbial organisms and histopathology confirmed the cystic nature of the structure. A 2.7 mm, 30 deg, 11 cm foreward-oblique endoscope with arthroscopic cannula was passed through a mucosal stab incision in the dorsal buccal recess into the cyst to allow for exploration. A separate instrument portal was placed in the center of the cyst through the skin which allowed for transcutaneous dacryocystorhinostomy with a meniscal probe to be performed. No clear communication was evident caudodorsally into the frontal sinus on endoscope examination. A small frontal sinus trephination was performed and lavage flowed easily into the cystic cavity and out of the nostril. Follow-up at 10 days and 17 months postoperatively showed complete resolution of clinical signs with an excellent cosmetic outcome. Endoscopy-assisted dacryocystorhinostomy demonstrated an effective minimally invasive technique to treat a functionally obstructive dacryocyst of the right nasolacrimal duct in a dog.

Meningocele, a rare subtype of cephalocele, can manifest in various positions and exhibit diverse characteristics. On the other hand, dacryocystocele, also a rare anatomical disorder, typically presents as a cyst located between the nose and the eye. Generally, distinguishing between these 2 lesions is not difficult. The presented case involves a fetus with suspected dacryocystocele, ultimately diagnosed postpartum as meningocele, underscoring the complexities in distinguishing between these conditions. The article details the patient's prenatal examinations, imaging findings, and the subsequent surgical intervention, highlighting the significance of meticulous diagnosis for effective prenatal management. The case illuminates the potential oversight and misdiagnosis challenges associated with atypical cephaloceles, contributing valuable insights for clinicians involved in prenatal diagnosis and management.

Congenital nasolacrimal duct cyst (NLDC) is a rare disorder, which can present with ophthalmological and nasal signs and symptoms. The authors analyse their personal experience to identify diagnostic criteria for NLDC, which were treated by endoscopic transnasal procedure. Clinical records of patients with a diagnosis of NLDC were retrospectively reviewed. All patients underwent rhinoscopy and ophthalmologist evaluation before surgery, whereas imaging was performed in selected cases. All neonates underwent transnasal endoscopic marsupialisation after failure of conservative medical therapy. Five patients were included in the study. One patient presented bilateral NLDC. In 3 cases, CT scan of the sinus was carried out. A total of 6 marsupialisation procedures were performed and a bi-canalicular lacrimal stent was positioned in 1 case. Complete remission of symptoms was observed in all cases. Nasal endoscopy is mandatory to diagnose NLDCs, and, in some cases, it can be complemented by radiological procedures. When symptoms persist after systemic and topical therapy, nasal endoscopic marsupialisation is the treatment of choice. This surgical procedure is effective, safe and can be repeated if needed. Il trattamento delle cisti congenite del dotto nasolacrimale: il ruolo della marsupializzazione endoscopica. La cisti congenita del dotto nasolacrimale (CDNL) è una condizione rara, che si manifesta con segni e sintomi oftalmologici e nasali. Gli autori analizzano la propria esperienza al fine di identificare criteri diagnostici per la CDNL, trattata con procedura endoscopica transnasale (ET). È stata eseguita un’analisi retrospettiva dei dati clinici dei pazienti affetti da CDNL. I pazienti sono stati sottoposti ad endoscopia nasale (EN) e valutazione oculistica prima dell’intervento, l’imaging è stato eseguito in casi selezionati. Tutti i neonati sono stati sottoposti a marsupializzazione ET dopo fallimento di terapia medica. Cinque pazienti sono stati inclusi nello studio. Un paziente ha presentato CDNL bilaterale. In 3 casi, è stata eseguita TC del massiccio facciale. Sono state eseguite 6 procedure di marsupializzazione; uno stent lacrimale bi-canalicolare è stato posizionato in 1 caso. La remissione completa dei sintomi è avvenuta in tutti i casi. L’EN è chiave per la diagnosi di CDNL e può essere integrata con procedure radiologiche. Quando i sintomi persistono dopo terapia sistemica e topica, la marsupializzazione ET rappresenta il trattamento di scelta. Questa procedura chirurgica è efficace, sicura e può essere se necessario ripetuta.