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Calcified thyroid cartilage
806
Radiology forum
0w.t
SCRC; ORAL
Mw
ORAL PATIIOL December 1990
2. Stafne EC, Gibilisco JA, eds. Oral roentgenographic diagnosis. 4th ed., Philadelphia: WB Saunders Co. 1975:304-6. 3. Smith NHH. Monostotic Paget’s disease of the mandible presenting with progressive resorption of the teeth. ORAL SURG ORAL MED ORAL PATHOL 1978;46:246-53. 4. Rose LR, Kaye D, eds. Internal medicine for dentistry. St Louis: CV Mosby Co, 1983:86-S, 1 14. 115. 5. Shirazi PH, Ryan WG, Fordham EW. Bone scanning in evaluation of Paget’s disease of bone. CRC Crit Rev Clin Radio1 Nucl Med 1974;5:523-58.
CALCIFIED
Fig. 1. Panoramic radiograph shows hypercementosis, loss of lamina dura, loss of normal trabeculation, osteolytic and osteosclerotic areas, and generalized loss of cortical bone limited to the mandible.
Fig. 2. Periapical radiograph of left cond premolar shows root resorption.
mandibular
THYROID
CARTILAGE
A
48-year-old Hispanic woman was referred to the department of oral and maxillofacial surgery for preprosthetic evaluation. The cephalometric radiograph showed a well-marginated homogeneous radiopacity consistent with a calcified thyroid cartilage (Fig. 1). The patient’s medical history was noncontributory, and the results of physical examination were negative. No further workup was performed. Calcification of the thyroid cartilage is normal and increases with age. In the hyaline cartilages of the larynx, calcification does not always precede ossification and there is little correlation between the two. The thyroid and cricoid cartilages have been found to undergo a greater frequency of calcification
se-
dental and skeletal radiographs, biopsy, and serum alkaline phosphatase confirmed the diagnosis.3-5 James M. Gergely, MAJ, DC, USA U.S. Army DENTAC Fort Bragg, NC 28307-5000
3EFERENCES 1. Shafer WG, Hine MK, Levy pathology. 4th ed. Philadelphia: 92.
BM, eds. A textbook of oral WB Saunders Co, 1983;688-
Fig.
1
Radiology forum
Volume 70 Number 6
in the female population, but a higher degree of ossification has been noted in male subjects.’ Both soft tissue lateral views and tomography can be used to fully evaluate the laryngeal cartilages.* Richard A. Salman, DDS Clinical Assistant Professor Lisa A. Kinney, DDS Assistant Professor Department of Oral and Maxillofacial Surgery New York University Dental Center K.B. Weissman Clinical Science Building 421 First Ave. New York, NY 10010
sition of the mandibular canal should be determined before surgical procedures involving the mandible are undertaken. In this case a mandibular canal bifurcated distal to the third molar area (Fig. 1). Thir cbr::zrality was clearly demonstrated on only one side. The patient denied any history of surgery in the region, previous presence of a third molar, discomfort, or known vascular irregularities. Palpation of the mandible in this region detected no defect. Abnormalities such as this emphasize the need of adequate preoperative radiography. Carl F. Driscoll, DMD Chief of Maxillofacial Prosthodontics USA DENTAC Tripler Army Medical Center 2448 Jasmine Place Honolulu, HI 96818
REFERENCES 1. Jurik AG. Ossification and calcification of the laryngeal skeleton. Acta Radio1 1984;25:17-22. 2. Shanks SC, Kerley P, eds. A textbook of x-ray diagnosis. Philadelphia: WB Saunders Co, 1973:84-8.
BIFID MANDIBULAR
CANAL
BILATERAL
T
he mandibular canal is generally seen as a single canal containing the inferior alveolar artery and nerve. Branches of these anatomic entities supply the teeth, bone of the mandible, and adjacent soft tissues. The mandibular canal is often seen on periapical or panoramic radiographs. In the region of the mandibular molars, the apices of the teeth may be in close proximity to the canal and its contents. The po-
807
CALCIFIED
STYLOHYOID
LIGAMENTS
A
43-year-old man was referred to the hospital with a chief complaint of pain on swallowing. Direct laryngoscopy, pharyngoscopy, and biopsy of the tongue ruled out obvious disease such as carcinoma. The pain was temporarily alleviated by a glossopharyngeal nerve block. Radiographs confirmed calcified stylohyoid ligaments (Fig. 1) consistent with Eagle syndrome. Richard A. Plezia, DDS, MS Veterans Administration Medical Center Dental Services (160) Southfield and Outer Drive Allen Park, MI 48101
Fig.
1
Fig.
1
Radiology forum
0w.t
SCRC; ORAL
Mw
ORAL PATIIOL December 1990
2. Stafne EC, Gibilisco JA, eds. Oral roentgenographic diagnosis. 4th ed., Philadelphia: WB Saunders Co. 1975:304-6. 3. Smith NHH. Monostotic Paget’s disease of the mandible presenting with progressive resorption of the teeth. ORAL SURG ORAL MED ORAL PATHOL 1978;46:246-53. 4. Rose LR, Kaye D, eds. Internal medicine for dentistry. St Louis: CV Mosby Co, 1983:86-S, 1 14. 115. 5. Shirazi PH, Ryan WG, Fordham EW. Bone scanning in evaluation of Paget’s disease of bone. CRC Crit Rev Clin Radio1 Nucl Med 1974;5:523-58.
CALCIFIED
Fig. 1. Panoramic radiograph shows hypercementosis, loss of lamina dura, loss of normal trabeculation, osteolytic and osteosclerotic areas, and generalized loss of cortical bone limited to the mandible.
Fig. 2. Periapical radiograph of left cond premolar shows root resorption.
mandibular
THYROID
CARTILAGE
A
48-year-old Hispanic woman was referred to the department of oral and maxillofacial surgery for preprosthetic evaluation. The cephalometric radiograph showed a well-marginated homogeneous radiopacity consistent with a calcified thyroid cartilage (Fig. 1). The patient’s medical history was noncontributory, and the results of physical examination were negative. No further workup was performed. Calcification of the thyroid cartilage is normal and increases with age. In the hyaline cartilages of the larynx, calcification does not always precede ossification and there is little correlation between the two. The thyroid and cricoid cartilages have been found to undergo a greater frequency of calcification
se-
dental and skeletal radiographs, biopsy, and serum alkaline phosphatase confirmed the diagnosis.3-5 James M. Gergely, MAJ, DC, USA U.S. Army DENTAC Fort Bragg, NC 28307-5000
3EFERENCES 1. Shafer WG, Hine MK, Levy pathology. 4th ed. Philadelphia: 92.
BM, eds. A textbook of oral WB Saunders Co, 1983;688-
Fig.
1
Radiology forum
Volume 70 Number 6
in the female population, but a higher degree of ossification has been noted in male subjects.’ Both soft tissue lateral views and tomography can be used to fully evaluate the laryngeal cartilages.* Richard A. Salman, DDS Clinical Assistant Professor Lisa A. Kinney, DDS Assistant Professor Department of Oral and Maxillofacial Surgery New York University Dental Center K.B. Weissman Clinical Science Building 421 First Ave. New York, NY 10010
sition of the mandibular canal should be determined before surgical procedures involving the mandible are undertaken. In this case a mandibular canal bifurcated distal to the third molar area (Fig. 1). Thir cbr::zrality was clearly demonstrated on only one side. The patient denied any history of surgery in the region, previous presence of a third molar, discomfort, or known vascular irregularities. Palpation of the mandible in this region detected no defect. Abnormalities such as this emphasize the need of adequate preoperative radiography. Carl F. Driscoll, DMD Chief of Maxillofacial Prosthodontics USA DENTAC Tripler Army Medical Center 2448 Jasmine Place Honolulu, HI 96818
REFERENCES 1. Jurik AG. Ossification and calcification of the laryngeal skeleton. Acta Radio1 1984;25:17-22. 2. Shanks SC, Kerley P, eds. A textbook of x-ray diagnosis. Philadelphia: WB Saunders Co, 1973:84-8.
BIFID MANDIBULAR
CANAL
BILATERAL
T
he mandibular canal is generally seen as a single canal containing the inferior alveolar artery and nerve. Branches of these anatomic entities supply the teeth, bone of the mandible, and adjacent soft tissues. The mandibular canal is often seen on periapical or panoramic radiographs. In the region of the mandibular molars, the apices of the teeth may be in close proximity to the canal and its contents. The po-
807
CALCIFIED
STYLOHYOID
LIGAMENTS
A
43-year-old man was referred to the hospital with a chief complaint of pain on swallowing. Direct laryngoscopy, pharyngoscopy, and biopsy of the tongue ruled out obvious disease such as carcinoma. The pain was temporarily alleviated by a glossopharyngeal nerve block. Radiographs confirmed calcified stylohyoid ligaments (Fig. 1) consistent with Eagle syndrome. Richard A. Plezia, DDS, MS Veterans Administration Medical Center Dental Services (160) Southfield and Outer Drive Allen Park, MI 48101
Fig.
1
Fig.
1