Humans ; Lipoma/pathology* ; Immunohistochemistry

No abstract available.
Female ; Humans ; Lipoma/*pathology ; Pharyngeal Neoplasms/*pathology

Esophageal Neoplasms ; pathology ; Esophagus ; pathology ; Humans ; Lipoma ; pathology

Spindle cell/pleomorphic lipoma is an uncommon benign adipose tissue tumor most frequently arising from the subcutaneous tissue of the back, shoulder, head and neck, and extremities. The deep cervical spaces are the rarely affected locations. Herein we report on the imaging findings of spindle cell/pleomorphic lipoma involving the retropharyngeal space in an elderly woman.
Aged ; Female ; Humans ; Lipoma/*pathology/ultrasonography ; Pharyngeal Neoplasms/*pathology/ultrasonography

One case of lipoma was reported in retropharyngeal space. Oropharyngeal CT showed: tumor's size was 59.2 mm x 28.4 mm, the boundary was clear, and the surrounding tissue was pressed obviously. Retropharyngeal space lies between posterior wall of the pharynx and prevertebral space, and contains fat and lymphoid tissue. Retropharyngeal space tumor often showed no clinical symptoms early. Tumor could show airway obstruction when growing up. Surgical operation is the only treatment method.
Aged ; Female ; Humans ; Lipoma ; pathology ; Pharyngeal Neoplasms ; pathology

OBJECTIVETo study the nature of the residue hard tissue after liposuction in lipoma and its role in lipoma recurrence.

METHODSThe residue hard tissue after liposuction was collected for histologic study, including HE-staining and immunohistochemistry with antibody of stem cell marker (CD29 and CD44). The average density and area of positive cells were analyzed statistically.

RESULTSThe residue hard tissue had a medium hardness. The center tissue was light yellow surrounding by soft, loose, irregular and cord-like tissue. The normal fat tissue is light yellow with a soft and unanimous texture. HE-staining showed abundant stromas in residue hard tissue, with lots of fibroblast-like cells locating among adipocytes. The cytoplasm was less with large and blue-staining nucleus. In normal fat tissue, the fat cells were uniform which were round or polygon. The stromas was less and the fibroblast-like cells were comparatively less. The slices were stained with antibody (CD29, CD44) of stem cell marker. The density and area of positive cells were much more in residue hard tissue than those in normal adipose tissue. Two Independence Samples T test were as follows: (t'CD29 = 9.931, P = 0.000; (t'CD44 =10.171, P = 0.000 for density; and (t'CD29 = 7.761, P = 0.000; tt'CDRR = 6.639, P = 0.000 for area. The difference was significant.

CONCLUSIONSAbundant fibroblast-like cells that are signed by the marker of stem cells exist in residue hard tissue. Those cells are proven to be lipoma derived stem cells (LDSCs) which may play an role in lipoma recurrence after lipoma liposuction.

Adipocytes ; cytology ; pathology ; Adipose Tissue ; pathology ; Humans ; Lipectomy ; Lipoma ; pathology ; surgery ; Recurrence ; Stem Cells ; pathology

Adult ; Chondroma ; pathology ; Ear Auricle ; pathology ; Ear Neoplasms ; pathology ; Humans ; Lipoma ; pathology ; Male

One type of soft tissue lesions of the oral cavity is lipoma, which is a kind of benign tumor composed of mature lipid cells. Although the lipoma presents as one of the most common mesenchymal neoplasms, most tend to develop on the trunk and proximal portions of the extremities. However, lipomas in the oral and maxillofacial region are much less frequent. Here we present a case of an intraoral lipoma in a six year-old child.
Child ; Diagnosis, Differential ; Humans ; Lipoma ; pathology ; surgery ; Male ; Mouth Mucosa ; pathology ; surgery ; Mouth Neoplasms ; pathology ; surgery

No abstract available.
Duodenal Neoplasms/pathology/*ultrasonography ; Duodenum/pathology ; Endosonography ; Female ; Humans ; Lipoma/pathology/*ultrasonography ; Middle Aged

Adult ; Bone Neoplasms ; diagnosis ; pathology ; Female ; Humans ; Lipoma ; diagnosis ; pathology ; Talus