Juvenile psammomatoid ossifying fibroma (JPOF) is a rare, slowly progressive tumor of the extragnathic craniofacial bones, with a tendency toward locally aggressive behavior and recurrence. The pathognomonic histopathologic feature is the presence of spherical ossicles, which are similar to psammoma bodies. Very few cases in association with secondary aneurysmal bone cyst (ABC) formation have been reported in literature. Treatment consists of complete surgical removal. However, incomplete excision has been associated with a high local recurrence rate. The prognosis is good because malignant change and metastasis have not been reported. The authors are reporting a case of JPOF of the ethmoid bones with secondary ABC in a 7-year-old female patient.
The assay is useful to rule in the disease in common tissue specimens (lung, pleura and lymph node); but less so in other tissue types. The poor sensitivity in tissue specimens necessitates careful interpretation of data generated by the assay in conjunction with a clinical suspicion of tuberculosis for making decision regarding empirical treatment. The complexity of the disease pathology along with the low bacillary load and clumping tendency require selection of more sensitive methods or gene targets.
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