Oral Bilateral Collagenous Fibroma: A previously unreported case and literature review

Desmoplastic Fibroblastoma of the Supraclavicular Region: A Rare Soft-Tissue Tumor With a Review from the Last Decade

Desmoplastic fibroblastoma (DF) is primarily a sporadic, rare, benign, soft-tissue tumor with an excellent prognosis and no reported recurrence to date. DF presents as a painless, slow-growing mass with symptoms due to its mass effect. We report a case of a middle-aged man presenting with a right supraclavicular mass and numbness of the right arm, eventually diagnosed as DF. After confirming the diagnosis with imaging and biopsy studies, the tumor was successfully excised using a transcervical approach with no complication or recurrence detected during the 2-year follow-up after surgery. A review of the relevant literature is presented regarding the presentation, diagnosis, and outcomes of published case reports of DF coinciding with those of our discussed case. This case report adds to the pool of uncommon DF cases mainly for its unique symptoms and location. It also highlights the necessity of health education related to painless masses that might be attributed as trivial in the community.

Symmetrical Fibrous Hyperplasia of the Palate

Bilateral symmetrical fibrous palate hyperplasia is not a common case in the literature. The cause of this pathological change is not completely known. The development of hyperplasia may also be associated with a genetic mutation in the gingival soft tissue or gingival injury. We present a case of a 47-year-old patient who developed a formation that manifested bilaterally in the hard palate. After the excision, there were no histological elements in the material that indicated aggressive behavior of the formation. The clinical and histological diagnosis was the bilateral symmetrical palate hyperplasia, which is a very rare condition.

Symmetrical palatal fibromatosis: An additional case report with immunohistochemical characterization

BACKGROUND

The term "symmetrical palatal fibromatosis" was recently suggested to designate bilateral palatal lesions presenting as typically broad, "mirror" images on the posterior lateral region of the hard palate.

PURPOSE

We report an additional case of this as-yet poorly understood oral lesion in a 67-year-old male patient, with emphasis on differential diagnoses and immunohistochemical characterization.

CASE REPORT

The histopathological examination demonstrated a hypocellular, fibrous connective tissue with prominent thick collagen bundles and few blood vessels. Scattered large, stellate, and sometimes binucleated fibroblasts were found. Immunohistochemistry was positive for vimentin and negative for smooth muscle actin, S-100, desmin, HHF-35, AE1-AE3, Factor XIIIa, CD68, and FOSL1. This is the second study to show the immunohistochemical profile, with emphasis in FOSL1, of an additional case of symmetrical palatal fibromatosis.

CONCLUSIONS

We encourage further reports about this entity, especially in relation to immunohistochemical and molecular features, so far poorly described, but very important for better recognition of this entity. Key words:Palate, symmetrical palatal fibromatosis, desmoplastic fibroblastoma, immunohistochemistry.

A prevertebral desmoplastic fibroblastoma presenting with sleep-related breathing dysfunction

Desmoplastic fibromas exceedingly rarely present in the retro/parapharyngeal space but should be considered in differential diagnosis for benign lumps in these anatomical regions.