Solitary Intraosseous Myofibroma of the Zygomatic Bone: A Case Report.

Myofibroblasts have been implicated in most fibro-contractive diseases and even in developing and specialized normal body tissues. Myofibroma denotes benign neoplasms composed of contractile myoid cells arranged around thin-walled blood vessels affecting the soft tissue, bone, or internal organs at all ages with the intraosseous variant being an uncommon entity. Histologically, these tumors are characterized by being circumscribed masses of spindle cells, which may lead to confusion in diagnosis with more aggressive soft tissue spindle cell tumors. A case is reported of a 7-year-old female patient who presented with a solitary intraosseous myofibroma in the inferolateral aspect of the left orbit. This article describes the clinical, radiographic, histopathologic, and immunohistochemical features of an intraosseous myofibroma in a female child.

A comparative evaluation of film and digital panoramic radiographs in the assessment of position and morphology of impacted mandibular third molars.

Background and Objective: Digital photo stimulable phosphor (PSP)-based radiography has many known theoretical advantages over conventional film radiography but its diagnostic efficacy has to be assessed clinically. This study compared the efficiency of conventional film-based panoramic radiographs with that of digital PSP-based panoramic radiographs in the assessment of position and morphology of impacted mandibular third molars. Materials and Methods: We selected a total of 80 impacted mandibular third molars that fulfilled the inclusion and exclusion criteria of this study. Both conventional film-based panoramic radiographs and digital PSP-based panoramic radiographs were taken of all the study samples and the teeth were later surgically removed. Conventional film-based and digital PSP-based panoramic radiographs were compared for their relative efficiencies in the assessment of impaction status, position of tooth, number of roots, root morphology, and proximity to mandibular canal of impacted mandibular third molars. An oral surgeon graded these same factors during/after surgical exploration and this assessment was considered the gold standard. The data obtained were statistically analyzed using descriptive statistics, chi-square test, and McNemar's test. Results: There was no statistically significant difference between conventional film-based radiographic assessment and digital PSP-based panoramic radiographic assessment of impaction status, position of tooth, number of roots, and proximity to mandibular canal of impacted mandibular third molars (P>0.05). However, there was significant difference between the two methods with regard to assessment of root morphology of impacted mandibular third molars (P=0.00). Interpretation and Conclusion : Conventional film-based panoramic radiographs and digital PSP-based panoramic radiographs were comparable in their accuracy in the preoperative study of impacted mandibular third molar with regard to impaction status, tooth position, number of roots, and proximity to the mandibular canal. Digital PSP-based panoramic radiographs were more accurate than conventional film-based panoramic radiographs in the assessment of root morphology of impacted mandibular third molars. Hence, we conclude that digital PSP-based panoramic radiographs can be used as an effective alternative to conventional film-based panoramic radiographs for assessment of position and morphology of impacted mandibular third molars.

Localization of impacted permanent maxillary canine using single panoramic radiograph.

Background and Objectives : The objective in localization is selection of a suitable technique which has minimal radiation dose, cost and maximum details. Panoramic radiograph, being a screening radiograph, can satisfy the above needs. Taking this into consideration, the present study was done to evaluate the reliability of panoramic radiograph in localization of impacted permanent maxillary canines by applying the criteria suggested by Chaushu et al. and by comparing it with Clark's rule. Materials and Methods : The study comprised of 114 subjects in the age group of 13-30 years of both the genders with 150 impacted canines visiting Department of Oral Medicine and Radiology during the study period. The study subjects were examined for clinically missing canine, and then confirmed with intra-oral peri-apical radiograph (IOPAR). Panoramic radiographs (for application of Chaushu et al. criteria) and IOPAR's (for application of Clark's rule) of the subjects were made and interpreted for parameters pertaining to the impacted canines. The data obtained was tabulated and subjected to statistical analysis using the statistical package for social sciences (SPSS) software. Results : Determination of the bucco-palatal position from panoramic radiographs, by applying Chaushu, et al. criteria, showed that localization in bucco-palatal position was possible for 96 of the 102 impacted canines placed in the middle and coronal zones. The remaining six impacted canines, three each in the middle and coronal zones, could not be localized as they showed overlapping in their range. By excluding them, the overall agreement worked out to be 94.11%. Localization was not possible for 48 impacted canines that lied in the apical zone. Conclusion : A single panoramic radiograph can serve as a reliable indicator for determining the bucco-palatal position of the impacted canines when they lie in the middle and coronal zones. When they lie in the apical zone it is recommended to explore their presence with other conventional or advanced imaging modalities.

White spongy nevus: a nonhereditary presentation.

White spongy nevus (WSN) is a rare hereditary dyskeratotic hyperplasia of the mucous membranes. It is an autosomal dominant disorder with variable penetrance. A few cases of WSN occur due to de novo mutations. We report a case of WSN in a 12-year-old female child, with none of her family members having similar lesions.

Stature estimation using odontometry and skull anthropometry.

OBJECTIVE: To investigate the possibility of estimating height from odontometry and anthropometric data of the skull for the positive identification of height in forensic investigations concerned with fragmentary human remains. MATERIALS AND METHODS: The study was carried out on 100 Mysorean patients, 50 males, and 50 females. Measurements of mesiodistal widths of the six maxillary anterior teeth, circumference of the skull, and height were made directly on each patient. Anteroposterior diameter of the skull was obtained on the lateral cephalograph. The data collected were subjected to statistical methods. The known heights of the combined data, data for males, and females were regressed against the odontometric and anthropometric variables using linear regression analysis. RESULTS: Significant sexual dimorphism was observed for the parameters studied ( P 0.05). Highly significant correlation was found between height and other parameters when combined data and data for males were regressed. The equation relating height to the combined mesiodistal width of maxillary anterior teeth was derived as height = 982.421 + 13.65 x combined mesiodistal width of maxillary anterior teeth ( P 0.0001). Similarly equations were obtained by regressing height to head circumference and skull diameter ( P 0.0001 for both). The above findings may hence provide reliable method of estimation of height from skeletal remains in the forensic setup.

Burkitt's lymphoma in an Indian girl: a case report.

Burkitt's lymphoma (BL) is a rare monoclonal proliferation of B-lymphocytes and is classified as a poorly differentiated lymphocytic lymphoma. This tumor was first noted in Africans. The cause of this tumor is debatable, but strong evidence implicates Epstein-Barr virus in its development. This tumor predominantly affects children and is probably the fastest growing tumor in humans, with exuberant proliferation. It is a very rare malignancy accounting for only 0.76% of solid malignant tumors among Indian children. A case of BL of the mandible in a 9-year-old girl of Indian origin is reported.

Facial plexiform neurofibroma in a child with neurofibromatosis type I: a case report.

Plexiform neurofibroma is a non-circumscribed, thick and irregular benign tumor of the peripheral nerve sheath. It is a virtually pathognomonic and often disabling feature of neurofibromatosis type I. The diffuse and soft nature of plexiform neurofibroma is often compared to 'a bag of worms' and is difficult to distinguish from a vascular malformation or a lymphangioma, thus necessitating thorough clinical and histopathological examination and imaging of the lesion. We present a case of plexiform neurofibroma in a 12-year-old male child.

Malignant peripheral nerve sheath tumour: an elusive diagnosis.

Malignant peripheral nerve sheath tumour (MPNST) also termed as spindle cell malignancy of the peripheral nerve Schwann cells or neurogenic sarcoma, represents approximately 10% of all soft tissue sarcomas. This tumour is usually found in the lower extremities and only 10-12% of all lesions occur in the head and neck region, which makes it a rare entity. The diagnosis of MPNST has been described as one of the most difficult and elusive diagnosis in the soft tissue diseases because of its non-specific presentation both clinically and histopathologically. This was overcome by the use of immunohistochemistry. A case of MPNST of the left maxillary antrum in a 45 -year -old male patient is reported.

Klestadt's cyst: a rarity.

Klestadt's cyst, more commonly known as the nasolabial cyst is an uncommon, non-odontogenic, soft tissue cyst characterized by its extra osseous location in the nasal alar region. Following its description first by Zukuerkandl in 1882, only 267 cases have been found in English literature. A case of nasolabial cyst in a 30-year-old female patient is presented.

Extragingival pyogenic granuloma.

Pyogenic granuloma is a well-known localized granulation tissue overgrowth in reaction to mild irritation. Although it is known to show a striking predilection for the gingiva, it can be found extragingivally with varying clinical features that sometimes may mimic more serious lesions such as malignancies. The clinical diagnosis of such an uncommon extragingival pyogenic granulomra can be quite challenging. The purpose of this article is to report an unusual case of extragingival pyogenic granuloma occurring on the lower lip, which presented as a cutaneous horn.

Sinonasal verrucous carcinoma with oral invasion.

Verrucous carcinoma is a rare warty variant of squamous cell carcinoma, most often seen in the oral cavity and larynx. Its occurrence in the sinonasal tract is rare. This tumor constitutes approximately 1% of all sinonasal neoplasms. The clinical presentation and the histopathological features of verrucous carcinoma are a subject of continuous discussion amongst diagnosticians and pathologists. A case with oral and nasal presentation of this tumor is reported here.

Gorlin syndrome: A case report.

Gorlin syndrome is an autosomal dominant inherited condition that exhibits high penetrance and variable expressivity. It is characterized mainly by Basal cell carcinomas, Odontogenic keratocysts and skeletal anomalies. However, medical literature documents both common and lesser known manifestations of the disorder involving the skin, central nervous system, skeletal system etc. Diagnosis of the syndrome in childhood is basically through oral abnormalities. A case of Gorlin syndrome has been reported here, with review of literature.

Papillary cystadenoma lymphomatosum: case report and review of literature.

Papillary Cystadenoma Lymphomatosum or Warthin's tumour is a unique neoplasm arising almost exclusively in the parotid salivary gland and is composed of oncocytic epithelium with a prominent lymphoid infiltrate. The tumor is usually asymptomatic and may be associated with varying degrees of pain not necessarily an indication of malignant transformation in the tumour. The tumour is managed easily by surgical excision. This article presents a typical case arising in the right parotid gland of a 73-year-old male with review of literature of this rare tumour.

Palatal rugae pattern in Mysorean and Tibetan populations.

OBJECTIVES: To compare the palatine rugae pattern of Mysorean and Tibetan subjects, to assess the predominant palatine rugae pattern in Mysorean and Tibetan population, and to determine the uniqueness of palatine rugae pattern in an individual. MATERIALS: Maxillary study models of 60 subjects each (30 males and 30 females) of age group 17-23 years, of Mysorean population and Tibetan population were assessed for the length, shape, and unification of rugae based on the classification by Lysell et al. The palatine rugae were compared for the above mentioned parameters. 2 way ANOVA and Chi square tests were used for statistical analysis. RESULTS: Statistical analysis showed that males had significantly more number of total rugae on the right compared to the left side in both populations. Indian males had more primary rugae on the left side as compared to females and vice versa for the Tibetan population. Also, Indian males had more number of curved rugae on both right and left sides than Tibetan males and Tibetan females had more wavy rugae on right and left sides than Indian females. In other aspects, no significant difference or association was found. CONCLUSIONS: A statistically significant association between the total number of rugae and the gender in both the study populations exists. Parameters like the length and shape of the rugae show racial differences.

Juvenile nasopharyngeal angiofibroma.

Juvenile nasopharyngeal angiofibroma is a rare, histologically benign yet locally aggressive, vascular tumor that typically affects adolescent males. It accounts for 0.5 percent of all neoplasms of the head and neck. A case of juvenile nasopharyngeal angiofibroma manifesting in the oral cavity in a 20-year-old male patient is presented and discussed.

Juvenile aggressive cemento-ossifying fibroma. A case report.

Juvenile Aggressive Cemento-Ossifying Fibroma is a benign, fibro osseous neoplasm commonly affected maxilla but also other bones including mandible, arising in children. It is considered to be a locally aggressive and quickly expansile lesion. Because of its aggressive nature and high recurrence rate, an early detection and a complete surgical excision is essential. A case of Juvenile Aggressive Cemento-Ossifying Fibroma in a 9 year old male child who visited the Department of Oral Medicine and Radiology, J.S.S. Dental college and Hospital, Mysore is being reported and discussed.