No abstract available.
Fibroma* ; Hyalin*

No abstract available.
Cholecystitis ; Hyalin

No abstract available.
Hyalin* ; Salivary Glands*

No abstract available.
Hyalin ; Hyaline Cartilage

No abstract available.
Hyalin ; Hyalinosis, Systemic

Calcifying fibrous pseudotumors (CFP) are rare soft tissue tumors that have unique histopathologic features characterized by a dense hyalinized collagenous tissue interspersed with benign spindle cells, lymphoplasmacytic infiltrate, and psammomatous or dystrophic calcifications. We report here on a case of calcifying fibrous pseudotumors in the pleura and provide a literature review.
Collagen ; Hyalin ; Pleura ; Pleural Diseases

Sclerotic fibroma is one of the histologic variants of soft fibroma. Clinically, it presents as a solitary skin-colored nodule, usually less than 1 cm in diameter in adults and has a wide anatomical distribution. Histologically, it is a well-circumscribed dermal nodule composed of hypocellular hyalinized collagen bundles separated by clefts and arranged in a storiform pattern. Treatment with simple excision is curative. We report a case of sclerotic fibroma in a 34-year-old man who presented an asymptomatic, bean-sized, intracutaneous nodule on his back for 3 years.
Adult ; Collagen ; Fibroma* ; Humans ; Hyalin

Fibroma of the tendon sheath is a slow-growing tumor, adherent to mainly the volar aspect of the tendon sheath of the finger or hand. Histopathologically, these tumors are always well-circumscribed and may be lobulated. They are largely composed of interlacing bundles of hyalinized, hypocellular fibrous tissue with the occasional increased cellular area. A characteristic feature is the presence of slit-like vascular channels. They are benign lesions with a tendency to recur in upto 25% of cases, although becoming more generally recognized are not yet familiar to dermatologists. Herein, we report two cases of fibroma of the tendon sheath.
Fibroma* ; Fingers ; Hand ; Hyalin ; Tendons*

Desmoplastic trichilemmoma is a rare variant of trichilemmoma characterized by typical features of trichilemmoma with abundant desmoplastic stroma. We report herein a 54-year-old man presented with 2-year history of a solitary bean sized verrucous nodule on the occipital scalp. Histologically, the tumor showed a well-defined lobular growth extending from the epidermis into the dermis with abundant central desmoplastic stroma. Epithelial lobules at the margins of the neoplasm showed the typical features of trichilemmoma composed of glycogen-rich clear cells and peripheral palisading columnar cells. In contrast, at the center the cells assume a more random pattern of cords and strands traversed by the hyaline stroma, mimicking invasive carcinoma. It was diagnosed desmoplastic trichilemmoma by the distinctive histologic appearance and totally excised.
Dermis ; Epidermis ; Humans ; Hyalin ; Middle Aged ; Scalp

Nodular fasciitis is a reactive myofibroblastic proliferative lesion and is frequently misdiagnosed as a sarcoma. Histopathologically, nodular fasciitis can be grouped into three subtypes based on their relation with the fascia: subcutaneous, fascial, intramuscular. The subcutaneous type is the most common type. Its histological appearance is quite variable, with lesions ranging from highly cellular "pseudosarcomatous" to myxoid proliferations, to hyalinized tumefactions with keloid-like strands of collagen. Herein we report a case of subcutaneous nodular fasciitis showing keloid-like, hylainized, and thickened collagenous change.
Collagen ; Fascia ; Fasciitis* ; Hyalin ; Keloid ; Myofibroblasts ; Sarcoma