UWCScholar :: Browsing by Author "Nortje, Christoffel"

Browsing by Author "Nortje, Christoffel"

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The imaging characteristics of odontogenic myxoma and a comparison of three different imaging modalities
(Elsevier, 2013) Kheir, Eman; Stephen, Lawrence X.G.S.; Nortje, Christoffel; Janse van Rensburg, Leon; Titinchi, Fadi
OBJECTIVE. To report the imaging characteristics of odontogenic myxoma (OM) and compare the different imaging modalities used. STUDY DESIGN. The radiological images of 33OMcases were retrospectively analyzed. The radiographs were severally examined to describe the features of OM as seen on conventional radiographs (CRs), computed tomography (CT) scans, and magnetic resonance images (MRIs). RESULTS. MRI was effective in displaying the true extension and contents of OMs. CT scans demonstrated the extensions of OMs, expansion, growth pattern, and rendered it possible to compare density of OM with that of surrounding muscles. Assessment of CRs revealed great limitations about the diagnostic values and failed to display important features. Conclusions. All 3 radiographic techniques, conventional radiography, CT, and magnetic resonance imaging (MRI), have inherent advantages and disadvantages; however, all 3 should be routinely used in the diagnosis of OM. The results of CTand MRI can accurately reveal margins of tumors and greatly aid in diagnosis.
Maxillo-facial radiology case 107
(South African Dental Association (SADA), 2013) Nortje, Christoffel
Carcinoma is the most common malignancy of the oral cavity. The neoplasm may affect any part of the jaws. Invasion of the jawbones by continuity is a frequent occurrence in carcinomas originating on the alveolar ridge and the gingival. A comparison between frequency of mandibular and maxillary osseous involvement in cases of oral mucosal carcinoma has shown a higher degree of invasion of the maxilla. Patients normally present with an ulcerative lesion (upper clinical picture), pain, loosening of teeth, pathological fracture (upper-right, cropped pantomograph) and parasthesia.
Maxillo-facial radiology case 108
(E DOC CC, 2013) Nortje, Christoffel
This 8-year-old female came to her paediatrician with an 18-day history of facial swelling. A biopsy was performed at that time, and was interpreted as indicating Burkitt's lymphoma. Findings from blood studies and chest radiographs were normal. Clinical examination revealed an 8 x 9 cm hard tumour attached to the left side of the mandible. Enlarged firm submandibular lymph nodes were also present. What is your diagnosis?
Maxillo-facial radiology case 109
(South African Dental Association, 2013) Nortje, Christoffel
This nine-year-old Caucasian boy presented at the Dental Faculty with a history of a slow-growing swelling of the mandible in the 43-45 region. The time of onset was unknown. On examination, the lesion was about 3 cm in diameter. Pain, possibly from secondary infection was the main symptom. No other abnormalities were present. What is your diagnosis?
Maxillo-facial radiology case 110
(South African Dental Association, 2013) Nortje, Christoffel
This eight-year-old child presented at the faculty with the main complaint of a swelling that has been increasing in size over the last nine months. He also mentioned that his lower right first molar tooth has not erupted. Clinical examination reveals a bony hard swelling of the lower right ramus. The primary molars on the same side show extensive caries. What are the most important radiological features and what is your provisional diagnosis?
Maxillo-facial radiology case 111
(South African Dental Association, 2013) Nortje, Christoffel
This 40-year-old Caucasoid male presented at the Faculty with the main complaint of a dull pain in the right temporomandibular joint during function, and a small lump in front of his ear. The discomfort in the joint had been present for about six months but the lump had only recently been brought to his attention by his barber. Extra-oral examination revealed only a slight facial asymmetry, as the swelling was masked by the patient’s sideburns. There was no associated lymphadenopathy.
Maxillo-facial radiology case 112
(South African Dental Association, 2013) Nortje, Christoffel
This fourteen year old male patient presented with a fast growing painful mass at the left angle of the mandible, showing mucosal ulceration and a loose 37. He also experienced a “pins and needles” sensation on the same side. Clinical examination revealed a hard bony swelling and an ulcerative lesion in the molar region (upper clinical pictures and cropped pantomograph). The lower pictures are from another patient with a similar condition. What are the most important radiological features and what is your diagnosis?
Maxillo-facial radiology case 114
(South African Dental Association, 2013) Nortje, Christoffel
This twelve year old patient presented at our Department with the main complaint that he had difficulty in opening his mouth. Clinical examination revealed a swelling in the region of the right zygoma. What is the most important radiological finding and what is your differential diagnosis?
Maxillo-facial radiology case 115
(South African Dental Association, 2013) Nortje, Christoffel
An 18-year-old female referred by her dental practioner, with the main complaint that the lower left second premolar tooth (35), is mobile. She also complains of gastrointestinal problems, nausea, bone pain and muscle weakness. Whilst the intraoral radiographs were being taken, the patient had a problem trying to hold the intraoral apparatus with her right arm, which according to her was due to the fact that a “malignant tumour” was removed from the head of the right humerus (upper shoulder radiograph) 10 months previously. According to a report from her general practioner, a frozen section was done at that time, which was diagnosed histologically to be a giant cell tumour. A resection was done and the head of the humerus was replaced with a prosthesis.
Maxillo-facial radiology case 116
(South African Dental Association, 2013) Nortje, Christoffel
The clinical picture and radiographs below are of two different patients with the same lesion. The upper pictures are of a 30-year old female who presented with a three year history of swelling in the anterior mandible. She was in good health at the time of presentation and her prior medical history was non-contributory. Oral examination revealed a neglected dentition with multiple caries lesions. Immediately lingual to the mandibular incisors there was a firm, fixed swelling with ulceration of the oral mucosa. The lower radiographs are those of a 20-year old female patient who has experienced parasthesia of the lower left jaw for many months.
Maxillo-facial radiology case 127
(South African Dental Association, 2015) Nortje, Christoffel
Below are clinical and radiographic images of a condition in which the terminal phalanges of the hands and the feet are enlarged. Growth of the mandibular condyle results in marked prognathism, and this together with macroglossia, leads to dental malocclusion. Which radiograph points most directly to the diagnosis?
Maxillo-facial radiology case 128
(South African Dental Association, 2015) Nortje, Christoffel
The lower clinical picture and radiographs represents a condition where the general growth is retarded, the children are pale due to anaemia and the most noticeable change of the oral structures is enlargement of the maxilla. What is your diagnosis?
Maxillo-facial radiology case 129
(South African Dental Association, 2015) Nortje, Christoffel
This six-year-old female patient presented with episodes of oral bleeding, fever and ulcerations affecting the submandibular region. Cropped pantomographs of the same patient were taken six weeks earlier with a follow-up pantomograph six weeks later. What are the most important radiological differences between the cropped pantomographs?.
Maxillo-facial radiology case 130
(South African Dental Association, 2015) Nortje, Christoffel
This elderly man presents with a history of a painful slow growing soft tissue swelling in his right jaw. The patient also reported paraesthesia of the right lower lip as well as paroxysms of intense general bone pain. During clinical examination of the oral cavity a very large soft tissue swelling was observed in the right angle and body of the mandible. You decide to take a panoramic radiograph of the jaws. What is your diagnosis?
Maxillo-facial radiology case 132
(South African Dental Association, 2015) Nortje, Christoffel
A sixteen year old female with a six year history of discomfort and pain in the left body and angle of the mandible during which time the first and second molar teeth had been extracted. Prior dental records including radiographs were not available. She had a slight clinical swelling of the left cheek. Intra-oral examination revealed both buccal and lingual expansion of the mandible in the retromolar area. No lymphadenopathy was detected.
Maxillo-facial radiology case 134
(South African Dental Association, 2015) Nortje, Christoffel
This 20 year-old male patient presented with periorbital and facial soft tissue masses of the left side of the face and a swelling affecting upper left maxilla (Figure.A, B). The patient also presents with mental retardation and epilepsy. What is your diagnosis?
Maxillo-facial radiology case 135
(South African Dental Association, 2015) Nortje, Christoffel
This patient presented with a sunken concave midface, anterior open bite, vertically elongated head, wide spread bulging eyes, various impacted teeth and chronic pain on the left side of the face. She also has syndactyly of the hands and feet. The same condition is also present in several members of her family. What is your diagnosis?
Maxillo-facial radiology case 136
(South African Dental Association, 2015) Nortje, Christoffel
Clinical picture and skull radiographs of a patient having a developmental field defect, probably occurring between 21 and 70 days of uterine life, rather than an individual syndrome. As such the etiology and pathogenesis are probably heterogeneous. What is your diagnosis?
Maxillo-facial radiology case 137
(South African Dental Association, 2016) Nortje, Christoffel
Clinical pictures and radiographs of patients presenting with a well demarcated focal mass occurring on the gingiva. Most reported series of cases show a predilection for occurrence in females with a mean age of 29 years. What is your diagnosis?
Maxillo-facial radiology case 138
(South African Dental Association, 2016) Nortje, Christoffel
Two cases of intentional knife wounds of the maxillofacial region, examples of trauma cases which do present fairly often at the Hospital for treatment. Clinical and radiological examination of Case 1 (Figures 1, 2, 3 and 4) revealed that the knife had passed through the right lateral wall of the orbit. The point of the knife was palpable subcutaneously near the left nasal bridge. There was proptosis and ptosis of the right eye. The knife blade was withdrawn along the same path as it had been inserted, with the patient under general anaesthesia. Case 2 (Figures 5 and 6) presented with a knife protruding from the patient's eye socket. Radiographic examination revealed the path and the size of the knife. The knife was removed surgically in the same manner as the previous case. These deliberately inflicted injuries to the maxillofacial region are grouped into a syndrome under what name?