1/16. Dermoid (hairy polyp) of the nasopharynx.Dermoids or hairy polyps, the most primitive forms of teratoma are rare lesions affecting the nasopharynx. They arise during early embryogenesis, being derived from only two germinal layers, ectoderm and mesoderm and are invariably benign. They usually present at or soon after birth with signs of upper aerodigestive tract obstruction. A case of hairy polyp of nasopharynx in a neonate is reported for its rarity. The etiology of teratomas, their classification in head and neck region, clinical features, and management in neonates are discussed.- - - - - - - - - - ranking = 1keywords = classification (Clic here for more details about this article) |
2/16. Nasopharyngeal teratomas and dermoids: a review of the literature and case series.OBJECTIVES: review the clinical differences between nasopharyngeal (NP) true teratomas and dermoids, with the addition of a case series to the literature. Additionally, review the impact of prenatal diagnosis on the management and outcome of these lesions. STUDY DESIGN: Retrospective review of cases from the Children's Hospital Medical Center (Seattle, WA) and Madigan Army Medical Center (Tacoma, WA) with the histopathologic diagnosis of nasopharyngeal teratoma or dermoid. review of medical literature for cases reported since 1977, when prenatal diagnosis of these lesions was first reported. Only tumors of the nasopharynx were considered. methods: charts and pertinent literature were reviewed and data presented with respect to age at diagnosis, signs and symptoms, perinatal diagnosis and management, preoperative evaluation, surgical treatment, and outcome. RESULTS: The majority of lesions were diagnosed at birth, with the most common presenting symptom being respiratory distress. Teratomas had a higher incidence of maternal polyhydramnios, preterm birth, need for emergent airway management, and associated congenital abnormalities. Complete surgical excision remains the treatment of choice. Recurrences were rare, occurring only in the teratoma group. prenatal diagnosis did not have a significant impact on the diagnosis and treatment of these lesions in our review. CONCLUSIONS: Inconsistent use of a standard classification system has made differentiating between NP teratomas and dermoids difficult, although the clinical implications can be critical. NP teratomas have a higher incidence of preterm birth, neonatal airway distress, associated congenital abnormalities, need for more extensive surgical procedures, and recurrence. prenatal diagnosis has made little impact on the overall diagnosis and treatment of these lesions.- - - - - - - - - - ranking = 1keywords = classification (Clic here for more details about this article) |
3/16. True lateral dermoid cyst of the floor of the mouth.Congenital dermoid cysts of the floor of the mouth are relatively rare but when they occur, they do so inevitably in the midline. We present a case of a true lateral dermoid cyst of this region without any intra-oral extension. We discuss the anatomical and histological classification of dermoid cysts within the floor of the mouth.- - - - - - - - - - ranking = 1keywords = classification (Clic here for more details about this article) |
4/16. Teratoid tumors of the mediastinum.Anterior mediastinum is the third commonest location for teratoid tumors besides the ovaries and the testes. Although there is still some confusion about the classification of these tumors, most authors now agree that the term dermoid cyst should be used for cystic lesions containing ectodermal and mesodermal elements. teratoma should be reserved for solid or cystic lesions containing derivatives of all the three germ layers. The clinical manifestations offer no clue to their malignant potentiality. Chest roentgenogram, tomogram and esophagogram are useful, and aortic arch studies may be indicated in some cases to exclude aortic aneurysms. Surgical excision offers the best method of diagnosis and treatment. The prognosis is excellent for benign teratoids but poor for malignant teratoids, especially in children and young adults.- - - - - - - - - - ranking = 1keywords = classification (Clic here for more details about this article) |
5/16. dermoid cyst of the floor of the mouth.Dermoid cysts of the floor of the mouth are rare lesions thought to be caused by entrapment of germinal epithelium during the closure of the mandibular and hyoid branchial arches. They usually present as a nonpainful swelling. This type of lesion occurs more frequently in patients between 15 and 35 years, but can be seen in all age ranges. Histologically, all dermoids are lined by epidermis. The contents of the cyst lining determine the histological categories of the cyst: epidermoid, if epidermis is lining the cyst; dermoid, if skin annexes exist; or teratoid, if there are tissues derivated from the three germinal layers. Anatomical classification is useful for surgical approach choice, intra- or extraorally. This report presents a case of a dermoid cyst of the floor of the mouth in a 12-year-old patient, and a review of all steps necessary for its diagnosis and treatment was made.- - - - - - - - - - ranking = 1keywords = classification (Clic here for more details about this article) |
6/16. Temporal dermoids: three cases and a modified treatment algorithm.Congenital orbitofacial dermoids can be segregated into frontotemporal, orbital, and nasoglabellar regions. Although 10% to 45% of nasoglabellar dermoids present with sinus tracts and occasional intracranial extension, it is rare for frontotemporal dermoids to do so. Frontotemporal dermoids typically manifest as superficial, slow-growing masses that are treated by simple excision. In this retrospective review of 24 patients with congenital orbitofacial dermoids, the authors noted three cases of temporal dermoids with sinus tracts and bony involvement. All three patients were female, with an average presenting age of 4.2 years. Two lesions appeared on the left and one on the right. Each lesion involved the sphenotemporal suture, requiring debridement of the outer cranial table to prevent recurrence. In light of their experience, the authors offer an amendment to the current treatment algorithm for congenital orbitofacial dermoids. A congenital frontotemporal dermoid with a sinus tract should have preoperative radiological evaluation with computed tomography or magnetic resonance imaging to define the pathological anatomy. If bony invasion exists, aggressive exposure and resection of at least the outer cranial table is necessary to prevent recurrence. Temporal dermoids may represent a distinct entity that requires a separation classification from frontotemporal dermoids.- - - - - - - - - - ranking = 1keywords = classification (Clic here for more details about this article) |
7/16. goldenhar syndrome: a case from papua new guinea.goldenhar syndrome is well known for its classical triad of epibulbar dermoids or lipodermoids, auricular appendages and pretragal fistulas. The syndrome was later included under the broader classification of oculoauriculovertebral spectrum to cover a wide range of associated anomalies. Here, a case is presented of goldenhar syndrome in a child from papua new guinea. The patient had large epibulbar lipodermoids requiring surgical debulking primarily for mechanical lagophthalmos and secondarily for cosmesis. Further multidisciplinary effort is required to manage her systemic manifestations of the syndrome.- - - - - - - - - - ranking = 1keywords = classification (Clic here for more details about this article) |
8/16. Supernumerary auricle on the lateral canthus.A boy was born with an appendage on his right lateral canthus, with associated supernumerary auricles on the right cheek and a right ocular dermoid. We resected the appendage. Its core was composed of elastic cartilage, as is the external auricle. The lateral canthus overlaps facial cleft line No. 8 in Tessier's classification [Plast Reconstr Surg 4 (1976) 69] and forms the upper part of the first branchial arch. It appears that our patient's appendage was a supernumerary auricle, which had developed from the first branchial arch.- - - - - - - - - - ranking = 1keywords = classification (Clic here for more details about this article) |
9/16. dermoid cyst of the floor of the mouth in an infant. (Case report).Dermoid cysts of the floor of the mouth in the infant are rarely encountered although the aetiology is mainly embryological. Meyer proposes the classification of the cysts based on the histological differentiation of the elements of the cyst wall. A case is reported which shows differences in the epithelial lining of the cysts found followed by the differential diagnosis and treatment.- - - - - - - - - - ranking = 1keywords = classification (Clic here for more details about this article) |
10/16. Congenital dermoid cyst of the oral cavity with gastric choristoma.A case of congenital dermoid cyst of the buccal floor occurring simultaneously with a gastric choristoma is reported. Only one other similar case could be found in our review of the literature. A tracheostomy was done to relieve airway obstruction. Complete excision was achieved through an intraoral approach. A quick review of the embryology of the floor of the mouth is presented as well as the classification and differential diagnosis of these lesions.- - - - - - - - - - ranking = 1keywords = classification (Clic here for more details about this article) |
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