Cherubism: report of a nonfamilial case

Diagnosis and initial management of children presenting with premature loss of primary teeth associated with a systemic condition: A scoping review and development of clinical aid

BACKGROUND

Premature loss of primary teeth (PLPT) can be a rare presentation of systemic medical conditions. Premature loss of primary teeth may present a diagnostic dilemma to paediatric dentists.

AIMS

To identify systemic conditions associated with PLPT and develop a clinical aid.

DESIGN

OVID Medline, Embase and Web of Science were searched up to March 2023. Citation searching of review publications occurred. Exclusion occurred for conference abstracts, absence of PLPT and absence of English-language full text.

RESULTS

Seven hundred and ninety-one publications were identified via databases and 476 by citation searching of review articles. Removal of 390 duplicates occurred. Following the exclusion of 466 records on abstract review, 411 publications were sought for retrieval, of which 142 met inclusion criteria. Thirty-one systemic conditions were identified. For 19 conditions, only one publication was identified. The majority of publications, 91% (n = 129), were case reports or series. Most publications, 44% (n = 62), were related to hypophosphatasia, and 25% (n = 35) were related to Papillon-Lefèvre. Diagnostic features were synthesised, and a clinical aid was produced by an iterative consensus approach.

CONCLUSIONS

A diverse range of systemic diseases are associated with PLPT. Evidence quality, however, is low, with most diseases having a low number of supporting cases. This clinical aid supports paediatric dentists in differential diagnosis and onward referral.

Multiple versus solitary giant cell lesions of the jaw: Similar or distinct entities?

The majority of giant cell lesions of the jaw present as a solitary focus of disease in bones of the maxillofacial skeleton. Less frequently they occur as multifocal lesions. This raises the clinical dilemma if these should be considered distinct entities and therefore each need a specific therapeutic approach. Solitary giant cell lesions of the jaw present with a great diversity of symptoms. Recent molecular analysis revealed that these are associated with somatic gain-of-function mutations in KRAS, FGFR1 or TRPV4 in a large component of the mononuclear stromal cells which all act on the RAS/MAPK pathway. For multifocal lesions, a small group of neoplastic multifocal giant cell lesions of the jaw remain after ruling out hyperparathyroidism. Strikingly, most of these patients are diagnosed with jaw lesions before the age of 20 years, thus before the completion of dental and jaw development. These multifocal lesions are often accompanied by a diagnosis or strong clinical suspicion of a syndrome. Many of the frequently reported syndromes belong to the so-called RASopathies, with germline or mosaic mutations leading to downstream upregulation of the RAS/MAPK pathway. The other frequently reported syndrome is cherubism, with gain-of-function mutations in the SH3BP2 gene leading through assumed and unknown signaling to an autoinflammatory bone disorder with hyperactive osteoclasts and defective osteoblastogenesis. Based on this extensive literature review, a RAS/MAPK pathway activation is hypothesized in all giant cell lesions of the jaw. The different interaction between and contribution of deregulated signaling in individual cell lineages and crosstalk with other pathways among the different germline- and non-germline-based alterations causing giant cell lesions of the jaw can be explanatory for the characteristic clinical features. As such, this might also aid in the understanding of the age-dependent symptomatology of syndrome associated giant cell lesions of the jaw; hopefully guiding ideal timing when installing treatment strategies in the future.

Cherubism: case report with review of literature

Cherubism is a rare hereditary fibro-osseous lesion characterized by painless expansion of jaws in childhood and is known to regress without treatment after puberty. Wait and watch approach has been advocated by many authors. The disease starts early in life manifesting itself fully in the second decade of life and is almost regressed in the third decade. Here, we report two cases of cherubism with clinico-radiographic presentation of its classical features in their third and fourth decade of life respectively and review the literature.

Neurofibromatosis presenting with a cherubism phenotype

We report on a child who presented clinical manifestations of both neurofibromatosis type 1 (NF1) and cherubism. With genetic testing, we found a mutation in the NF-1 gene, confirming the neurocutaneous disorder. Histology when correlated with radiological evaluation of a mandibular biopsy was consistent with cherubism. This is the first report in the literature of a child with proven neurofibromatosis type 1 and cherubism without extragnathic lesions. This emphasises that cherubism is a clinical phenotype that can be associated with a number of germline mutations involving SH3BP2, PTPN11 and NF1.

Cherubism: a clinical, radiographic, and histopathologic comparison of 7 cases

PURPOSE

Cherubism is an uncommon fibro-osseous disorder of the jaws that presents with varying degrees of involvement and a tendency toward spontaneous remission. Lesions are characterized by replacement of bone with fibrovascular tissue containing abundant multinucleated giant cells. We attempted to study the relationships among the degree of cherubism, the radiographic extent of the jaw lesions, the histopathologic findings, and the clinical course of 7 patients.

PATIENTS AND METHODS

In 7 patients diagnosed with cherubism, we evaluated the degree of fibrosis and perivascular cuffing, the presence of focal hemosiderin deposits, and giant multinucleated cell density (absent, few, moderate, or severe). Clinical course and progression were also assessed using a 4-point scale (improvement, no changes, modest progression, and marked progression).

RESULTS

The patients were followed up for an average of 8.5 years. Two patients exhibited clinical and radiographic improvement, while 3 showed no changes, and 2 progressed despite surgical treatment in 1 of them.

CONCLUSION

The course of cherubism in 1 of our patients may represent evidence of an association between the presence of abundant multinucleated giant cells, an increased extent of the lesions, and a more aggressive behavior of the disease.

Cherubism: clinical evidence and therapy

Cherubism is a hereditary childhood disease of autosomal dominant inheritance that is more common in the male sex. Some cases have also revealed a mutation of the gene FGF-RIII (fibroblast growth factor receptor III). The clinical picture of cherubism is characterized by painless symmetrical swelling of the mandible and polycystic destruction of the mandibular bone structure. Complications include delayed dentition, dental root resorption, malalignment of teeth, and impacted teeth. The disease progression comes to a halt of its own accord at the end of puberty. Spontaneous recoveries have been observed. Histologically, multinuclear giant cells with osteoclastic activity, which correspond to a giant cell granuloma, are found in fibrous stroma. It is generally agreed that decisions about surgical intervention should be considered carefully. A case report describes the course of the disease and therapy of a female patient with a periorbital manifestation of cherubism. The latero-orbital enlargement of the intraorbital and latero-orbital region of the zygomatic bone resulted in displacement of the orbital contents with a motility disorder of the eyes. The motility disorder was eliminated by reduction of the diseased hard tissue as well as by carrying out a modeling orbitotomy and by reconstructing an anatomically correct localized and irregular bilateral osseous structure of the zygomatic bone in the intraorbital and latero-orbital region.

Cherubism: a 36-year long-term follow-up of 2 generations in different families and review of the literature

OBJECTIVE

To clarify the relationships between the varying clinical or radiographic features of cherubism.

STUDY DESIGN

Nonparametric statistics were used in a long-term follow-up of 18 patients through 2 generations from 6 Danish families.

RESULTS

The radiographic grade of cherubism was significantly related to sex, maximal buccal bone expansion, course of cherubism, and number of aplasia or ectopic impacted teeth, but it was not related to families. Normal dentition in nonaffected regions was present or was obtained in 14 of 14 patients (age, >14 years). Surgical treatment did not provoke growth of lesional tissue in 22 of 22 cases. Radiographically, the bone structure in the lesional areas was related to age in all grades of cherubism: new bone formation in radiolucent areas (age, >20 years), normal bone structure with multilocular sketches (age, 32 to 39 years), and completely normal bone structure (age, >41 years), also found in 7 of 7 carriers of cherubism (age, >32 years).

CONCLUSIONS

This group analysis verifies the knowledge of cherubism previously based on cumulative reviews of findings in single-family and case reports.

Cherubism: diagnosis, treatment, and comparison with central giant cell granulomas and giant cell tumors

An extensive case of cherubism in a 17-year-old girl with no apparent familial history is presented. The rationale for treatment is presented and is compared with previous reports that have advocated nontreatment. The clinical and histologic similarities of cherubism to central giant cell granuloma and the giant cell tumor of bone are also discussed.

Cherubism. Findings in three cases in the same family

Cherubism is a benign hereditary giant-cell lesion of the mandibular and maxillary spongiosa which appears during childhood between the age of 2 and 5 years and progresses until puberty when it spontaneously regresses. It appears as a bilateral, painless swelling. It normally requires no treatment. Three children in the same Algerian family who suffered from this disease were brought to our department. Radiographic examinations were carried out, giving good definition of the lesions. The 3 patients were finally operated on, as operative treatment was, effectively, necessary.