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Ono K, Nishioka T, Obata K, Takeshita Y, Irani C, Kunisada Y, Yoshioka N, Ibaragi S, Tubbs RS, Iwanaga J. Lingual nerve revisited-A comprehensive review Part II: Surgery and radiology. Clin Anat 2024. [PMID: 39121363 DOI: 10.1002/ca.24211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2024] [Revised: 07/20/2024] [Accepted: 07/27/2024] [Indexed: 08/11/2024]
Abstract
The lingual nerve (LN) is a branch of the mandibular division of the fifth cranial nerve, the trigeminal nerve, arising in the infratemporal fossa. It provides sensory fibers to the mucous membranes of the floor of the mouth, the lingual gingiva, and the anterior two-thirds of the tongue. Although the LN should rarely be encountered during routine and basic oral surgical procedures in daily dental practice, its anatomical location occasionally poses the risk of iatrogenic injury. The purpose of this section is to consider this potential LN injury risk and to educate readers about the anatomy of this nerve and how to treat it.
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Affiliation(s)
- Kisho Ono
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
- Section of Oral, Diagnostic and Rehabilitation Sciences, College of Dental Medicine, Columbia University, New York, New York, USA
- Cancer Biology and Immunology Laboratory, Columbia University Irving Medical Center, New York, New York, USA
| | - Takashi Nishioka
- Liaison Center for Innovative Dentistry, Tohoku University Graduate School of Dentistry, Miyagi, Japan
- Department of Dental Informatics and Radiology, Tohoku University Graduate School of Dentistry, Miyagi, Japan
| | - Kyoichi Obata
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Yohei Takeshita
- Department of Oral and Maxillofacial Radiology, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Chista Irani
- Tulane University School of Medicine, New Orleans, Louisiana, USA
| | - Yuki Kunisada
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Norie Yoshioka
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Soichiro Ibaragi
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - R Shane Tubbs
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, Louisiana, USA
- Department of Structural & Cellular Biology, Tulane University School of Medicine, New Orleans, Louisiana, USA
- Department of Neurosurgery and Ochsner Neuroscience Institute, Ochsner Health System, New Orleans, Louisiana, USA
- Department of Surgery, Tulane University School of Medicine, New Orleans, Louisiana, USA
- Department of Anatomical Sciences, St. George's University, West Indies, Grenada
- University of Queensland, Brisbane, Queensland, Australia
| | - Joe Iwanaga
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, Louisiana, USA
- Department of Structural & Cellular Biology, Tulane University School of Medicine, New Orleans, Louisiana, USA
- Department of Oral and Maxillofacial Anatomy, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
- Division of Gross and Clinical Anatomy, Department of Anatomy, Kurume University School of Medicine, Fukuoka, Japan
- Dental and Oral Medical Center, Kurume University School of Medicine, Fukuoka, Japan
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Schmitz L, Büscheck F, Betz CS, Böttcher A. An unusual clinical presentation of a plunging ranula-The plunging ranula with extension to the vallecula. Clin Case Rep 2024; 12:e8964. [PMID: 38883226 PMCID: PMC11176729 DOI: 10.1002/ccr3.8964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 05/06/2024] [Accepted: 05/08/2024] [Indexed: 06/18/2024] Open
Abstract
Key Clinical Message A plunging ranula may present initially as an extensive vallecular cyst and correct diagnosis may be reached with the use of ultrasound, fluid aspiration for amylase detection, and MRI imaging. Abstract The ranula is a pseudocyst of the sublingual salivary gland and can be divided into two known subtypes. The simple ranula and plunging ranula. While the simple type can be found in the floor of the mouth, the plunging ranula usually pervades the mylohoid muscle and presents as a cervical swelling. The presented case should outline the difficulties in diagnostic and treatment of an uncommon expression of a mucocele above the mylohoid muscle without presenting either a cervical or an intraoral swelling, only extending towards the vallecula. We present a previously unreported clinical manifestation of a ranula of an 18-year old male, which extends posteriorly, remaining confined in the supramylohyoid muscle space. The cystic lesion protrudes in the oropharynx, and clinically appears as an extensive vallecular cyst. On magnetic resonance imaging the initial suspected diagnosis of a vallecular cyst was changed to the final diagnosis of a plunging ranula. The marsupialization of the cyst sac was performed. Outpatient follow-up revealed a persisting ostium, indicating a continuous extravasation of the sublingual gland. The present case report describes an unusual clinical presentation of a plunging ranula, remaining above the mylohyoid muscle and protruding into the oropharynx, misdirecting to the first suspected diagnosis of a vallecular cyst. The case highlights the useful contribution of the MRI imaging for differential diagnoses and the need for criteria to indicate further investigations.
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Affiliation(s)
- Lisa Schmitz
- Department of Otorhinolaryngology University Hospital Hamburg-Eppendorf Hamburg Germany
| | - Franziska Büscheck
- Department of Pathology University Hospital Hamburg-Eppendorf Hamburg Germany
| | - Christian Stefan Betz
- Department of Otorhinolaryngology University Hospital Hamburg-Eppendorf Hamburg Germany
| | - Arne Böttcher
- Department of Otorhinolaryngology University Hospital Hamburg-Eppendorf Hamburg Germany
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Yun J, Gidumal S, Saturno MP, Wein LE, Fan J, Khorsandi AS, Chung D, Chen H, Chai RL. Diagnostic Difficulties of Plunging Ranula: A Review of 18 Cases. Laryngoscope 2024; 134:2689-2696. [PMID: 38217447 DOI: 10.1002/lary.31288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 12/20/2023] [Accepted: 01/04/2024] [Indexed: 01/15/2024]
Abstract
OBJECTIVE(S) Despite advancements in imaging techniques and cytological analysis, plunging ranula remains a challenging surgical, radiologic, and pathologic phenomenon. Of the 18 patients we evaluated at our institution, we highlight three cases that illustrate the high rate of misleading imaging and cytological results when assessing plunging ranula. METHODS Imaging results, biopsy findings, operative techniques, and pathological reports were reviewed from patients who had either a preoperative or postoperative diagnosis of ranula and underwent surgery by a single head and neck surgeon at a tertiary care center. RESULTS Of the 18 identified patients, computed tomography was correct on preoperative imaging 73% of the time and magnetic resonance imaging was correct on preoperative imaging 71% of the time. Two patients underwent preoperative ultrasound and their ultrasound reports did not accurately diagnose the presence of a ranula. Two patients underwent preoperative fine needle aspiration biopsy due to inconclusive preoperative imaging, in which results suggested either a ranula or epidermal cyst. Both ultimately did not match the final pathology. Three of eighteen patients (17%) underwent an inappropriate initial surgery due to incorrect imaging diagnoses and/or biopsy findings. CONCLUSION Despite use of preoperative modalities to distinguish plunging ranula from other cystic floor of mouth lesions, surgeons must be aware that no workup modality is fully precise. The potential for revision surgery must be included in all preoperative discussions for presumed plunging ranula. LEVEL OF EVIDENCE 4 Laryngoscope, 134:2689-2696, 2024.
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Affiliation(s)
- Jun Yun
- THANC, (Thyroid, Head and Neck Cancer) Foundation at Mount Sinai, New York, New York, USA
- Department of Otolaryngology-Head and Neck Surgery, The Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Sunder Gidumal
- Department of Otolaryngology-Head and Neck Surgery, The Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Michael P Saturno
- THANC, (Thyroid, Head and Neck Cancer) Foundation at Mount Sinai, New York, New York, USA
- Department of Otolaryngology-Head and Neck Surgery, The Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Lauren E Wein
- THANC, (Thyroid, Head and Neck Cancer) Foundation at Mount Sinai, New York, New York, USA
- Department of Otolaryngology-Head and Neck Surgery, The Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Jun Fan
- Department of Pathology, The Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Azita S Khorsandi
- Department of Radiology, New York Eye and Ear Infirmary of Mount Sinai, New York, New York, USA
| | - Daniel Chung
- Department of Pathology, The Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Hua Chen
- FNA Medical Diagnostics, New York, New York, USA
| | - Raymond L Chai
- Department of Otolaryngology-Head and Neck Surgery, The Icahn School of Medicine at Mount Sinai, New York, New York, USA
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Obata K, Kitagawa N, Ono K, Kanemoto H, Fukino K, Takeshita Y, Ibaragi S, Tubbs RS, Iwanaga J. Mylohyoid Muscle: Current Understanding for Clinical Management Part II: Clinical Anatomy, Radiology, and Surgical/Clinical Relevance. J Craniofac Surg 2024; 35:256-260. [PMID: 37948627 DOI: 10.1097/scs.0000000000009797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 08/21/2023] [Indexed: 11/12/2023] Open
Abstract
The mylohyoid is one of the suprahyoid muscles along with the geniohyoid, digastric, and stylohyoid muscles that lies between the anterior belly of the digastric muscle inferiorly and the geniohyoid superiorly. In Part II, the radiology and clinical/surgical importance of the mylohyoid muscle will be discussed.
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Affiliation(s)
- Kyoichi Obata
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Norio Kitagawa
- Department of Oral and Maxillofacial Anatomy, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kisho Ono
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Hideka Kanemoto
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Keiko Fukino
- Department of Oral and Maxillofacial Anatomy, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yohei Takeshita
- Department of Oral and Maxillofacial Radiology, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Soichiro Ibaragi
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - R Shane Tubbs
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine
- Department of Neurology, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine
- Department of Structural & Cellular Biology, Tulane University School of Medicine, New Orleans, LA
- Department of Anatomical Sciences, St. George's University, St. George's, Grenada
- Department of Surgery, Tulane University School of Medicine
- Department of Neurosurgery and Ochsner Neuroscience Institute, Ochsner Health System, New Orleans, LA
- University of Queensland, Brisbane, Australia
| | - Joe Iwanaga
- Department of Oral and Maxillofacial Anatomy, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine
- Department of Neurology, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine
- Department of Structural & Cellular Biology, Tulane University School of Medicine, New Orleans, LA
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Ultrasound in the diagnosis and differential diagnosis of enoral and plunging ranula: a detailed and comparative analysis. J Ultrasound 2022:10.1007/s40477-022-00743-7. [DOI: 10.1007/s40477-022-00743-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 10/05/2022] [Indexed: 12/23/2022] Open
Abstract
Abstract
Purpose
To develop sonographic criteria for ranula that to allow rapid and precise diagnosis, differentiation between enoral (ER) and plunging ranula (PR), and differential diagnosis from other competing pathologies in this region.
Methods
Patients who presented with or were referred with ranula between 2002 and 2022 were assessed in a retrospective study. After clinical investigation, ultrasound examinations were performed in all cases. Several sonographic parameters describing the echotexture, shape and size of ranulas, their relationship to important surrounding anatomical landmarks and the characteristic spreading pattern of ERs and PRs were elaborated and evaluated.
Results
207 ranulas were included (82.12% ERs and 17.87% PRs). The ranulas were all in close anatomical relationship to the sublingual gland (SLG) and mylohyoid muscle (MM). The echo texture was hypoechoic to anechoic in 97.6% of the lesions. In comparison with ERs, PRs were larger and irregular in shape significantly more often (P = 0.0001). There were significant differences between ERs and PRs in their exact location relative to the SLG (superficial, deep, anterior, each P = 0.0001; posterior, P = 0.03) and level of the MM (above, below, above and below, P = 0.0001 each). The exact extent and plunging pattern were depicted in all PRs, but naturally in none of the ERs.
Conclusions
The ultrasound criteria developed in this study, confirming previously published results, indicate that ultrasound is an excellent diagnostic tool for diagnosing ranula and differentiating between ERs and PRs.
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Abstract
Feeding difficulty is common in the pediatric population, particularly in at-risk infants, such as those born prematurely. Appropriate work-up should involve a multidisciplinary team and may commonly use modified barium swallow and flexible endoscopic evaluation of swallow, in addition to history and physical examination. Structural causes of dysphagia may involve surgical management, whereas nonstructural causes may invoke medical therapies. If symptoms do not resolve following intervention, it is important to revisit the interdisciplinary team, because dysphagia is commonly multifactorial in origin. Appropriate identification and early intervention are necessary for successful outcomes in growth and development for children.
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Affiliation(s)
- Annie E Moroco
- Department of Otolaryngology-Head & Neck Surgery, Thomas Jefferson University Sidney Kimmel School of Medicine, 111 South 11th Street, Philadelphia, PA 19107, USA
| | - Nicole L Aaronson
- Department of Otolaryngology-Head & Neck Surgery, Thomas Jefferson University Sidney Kimmel School of Medicine, 111 South 11th Street, Philadelphia, PA 19107, USA; Department of Surgery, Division of Pediatric Otolaryngology, Nemours Children's Hospital of Delaware, 1600 Rockland Road Wilmington, DE 19803, USA.
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Ranula in children: Retrospective study of 25 years and literature review of the plunging variable. Int J Pediatr Otorhinolaryngol 2021; 148:110810. [PMID: 34242981 DOI: 10.1016/j.ijporl.2021.110810] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 05/14/2021] [Accepted: 06/21/2021] [Indexed: 11/21/2022]
Abstract
OBJECTIVE The aim of this article was to conduct a 25-year retrospective study within an oral surgery department, on the incidence of the ranula in children and its ideal treatment, associated with a literature review on the plunging ranula in pediatrics. METHODS A retrospective review of the medical records of pediatric patients (0-12 years) from 1995 to 2020 was performed in an oral surgery department in Maringá/Brazil. The examined data included age of the patients, sex, clinical signs, time of evolution and follow-up, complementary exams, type of ranula, diagnostic hypothesis, surgical procedures and accesses, complications and recurrence. In addition, a literature review was carried out on the plunging ranula in children, using the MEDLINE database, from 1995 to 2020, with the search terms: "PLUNGING RANULA" OR "CERVICAL RANULA. A PICOS was established and PRISMA standards were followed. RESULTS In the retrospective study, of the 11 patients found, 10 were with simple ranulas and only 1 with plunging ranula. All patients were approached by intraoral access, and conservative treatments had higher recurrence rates. The case of plunging ranula was treated by intraoral resection of the sublingual gland and saliva drainage, and obtained good results with 15 years of follow-up. In the literature review, 372 articles were found, which 10 were qualitatively selected after inclusion and exclusion criteria. Excision of the sublingual gland was the most prevalent procedure, and intraoral and extraoral accesses had the same incidence, despite the fact that the last one had higher percentages of complications. CONCLUSION The treatment of ranulas is variable; however, it is proven that conservative methods have higher rates of recurrence. As for the plunging ranula, resection of the sublingual gland through intraoral access, associated with mucus leakage, is considered a safe and effective treatment.
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Bertrand B, Chimeli-Ormonde L, Ormonde JB. Plunging ranula in a 7-year-old girl. JOURNAL OF PEDIATRIC SURGERY CASE REPORTS 2021. [DOI: 10.1016/j.epsc.2021.101857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Chen F, Barber TW, Tudge S. Recalcitrant plunging ranulas: a new approach to salivary tissue localization using prostate-specific membrane antigen positron emission tomography. ANZ J Surg 2020; 90:E108-E109. [PMID: 32199029 DOI: 10.1111/ans.15824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 02/26/2020] [Accepted: 03/01/2020] [Indexed: 11/29/2022]
Affiliation(s)
- Fiona Chen
- Department of Ear, Nose and Throat Surgery, Alfred Health, Melbourne, Victoria, Australia
| | - Thomas W Barber
- Department of Nuclear Medicine and PET, Alfred Health, Melbourne, Victoria, Australia.,Department of Medicine, Monash University, Melbourne, Victoria, Australia
| | - Stephen Tudge
- Department of Ear, Nose and Throat Surgery, Alfred Health, Melbourne, Victoria, Australia
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Syebele K, Munzhelele TI. The anatomical basis and rational for the transoral approach during the surgical excision of the sublingual salivary gland for the management of plunging ranula. Am J Otolaryngol 2020; 41:102371. [PMID: 31917022 DOI: 10.1016/j.amjoto.2019.102371] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Accepted: 12/08/2019] [Indexed: 10/25/2022]
Abstract
PURPOSE The aim of this study was to illustrate and confirm that the complete intraoral excision of the sublingual gland alone, is anatomically the most rational approach, for the management of plunging ranula. MATERIAL AND METHODS We retrospectively reviewed clinical charts of diagnosed HIV-infected patients presenting with plunging ranula. The intraoral approach was used for the complete excision of the sublingual gland with evacuation of the pseudocystic content only. Neither extra oral approach, nor ranula dissection / drainage was performed. The surgical procedure was performed using local anesthesia. Pre- and postoperative MRI-scan investigations were recorded. Histological reports were documented to confirm the diagnosis of oral mucocele. Patients were clinically monitored. RESULTS We identified 90 adults presenting with oral mucocele, type ranula. Seventy (77%) of them were diagnosed with HIV infection. Plunging ranula was recorded in 35 (50%) patients from the latter group. The study enrolled 11 operated patients whose files contained useable data, including an acceptable follow-up period. The postoperative follow-up period ranged from three to 15 months. The clinical and postoperative MRI-scans of operated patients demonstrated satisfactory results. There were neither postoperative complications nor recurrence of ranula reported. CONCLUSION The location of the sublingual gland in the floor of the mouth coupled with the physio-pathogenesis of the plunging ranula, makes the transoral complete excision of the offending gland, with the intraoral evacuation of the pseudocyst, anatomically the most rational approach for plunging ranula management. There is no need for cervical approach, ranula dissection and/or postoperative placement of drainage.
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Abstract
Ranulas are mucoceles located on the floor of the mouth. The main form of treatment for these lesions is surgical excision, but this can lead to complications such as hemorrhage, recurrence of the lesion, and damage to the lingual nerve. Thus, other therapeutic modalities are indicated, such as modified micromarsupialization, which is a simple technique and not associated with recurrences, and without the need of a new intervention in the postoperative period. An 11-year-old female child, nonwhite, presented with bubble-shaped lesion located on floor of the mouth, on the left side, with exophytic growth, sessile base, bluish coloration, measuring about 4.0 cm in diameter, showing well-defined limits, well-delimited contours and borders, smooth surface, and softened consistency. Under the diagnostic hypothesis of the ranula, a modified micromarsupialization was performed. After 90 days of observation, complete regression and repair of the lesion were observed, without recurrence. Modified micromarsupialization is a simple therapeutic modality, low cost, and well-tolerated by the patient, mainly the pediatric one, being considered very effective in the treatment of lesions of difficult clinical management, as the ranula.
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Abstract
A number of salivary gland diseases may present with a wide variety of symptoms to the general dental practitioner, or may appear as unexpected findings on dental radiographs. Careful clinical examination in combination with appropriate imaging will assist practitioners in identifying whether further investigation or referral is required. This article explores the main types of salivary gland diseases and their potential pathology.
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Olojede ACO, Ogundana OM, Emeka CI, Adewole RA, Emmanuel MM, Gbotolorun OM, Ayodele AO, Oluseye SB. Plunging ranula: surgical management of case series and the literature review. Clin Case Rep 2017; 6:109-114. [PMID: 29375848 PMCID: PMC5771944 DOI: 10.1002/ccr3.1272] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 09/06/2017] [Accepted: 10/18/2017] [Indexed: 11/06/2022] Open
Abstract
Plunging ranulas are rare; report of this condition is particularly limited in our environment. We present case series in children; with all cases having both oral and cervical components. It is important to note this type of presentation of plunging ranula and their appropriate management.
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Affiliation(s)
| | | | - Christian Ibesi Emeka
- Department of Oral and Maxillofacial Surgery College of Medicine University of Lagos Lagos Nigeria
| | - Richard Ayodeji Adewole
- Department of Oral and Maxillofacial Surgery College of Medicine University of Lagos Lagos Nigeria
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