نتایج جستجو برای: hertwigs root sheath
تعداد نتایج: 153555 فیلتر نتایج به سال:
Trichilemmal cysts, also known as pilar cysts, are slow-growing lesions commonly found on the scalp of elderly women. They arise from outer root sheath epithelium and have a distinctive pattern of keratinization called trichilemmal keratinization. Here, we describe a rare case of a trichilemmal cyst on the lower lip mucosa of a 29-year-old man. The infrequency of intraoral hairs unquestionably ...
Introduction: Basal cell carcinoma (BCC) is the most common cutaneous malignancy that humans acquire in the course of a lifetime (1). It is a malignant skin tumor arising from basal cells of the surface epidermis or external root sheath of the hair follicle. Case Report: 80 year old female farmer by occupation presented with chief complaints of blackish patch over the left lateral side of nose ...
Spinal CT scans and radiculograms of 100 patients who had undergone both examinations were studied with the aim of identifying morphologic CT features associated with compression of the intrathecal segment of the nerve root as demonstrated by radiculography. The interest for such a study lies in the fact that, in contradistinction to the distal, extrathecal root segment outlined by fat in the f...
Two patients presented with the unusual condition of multiple warty dyskeratomas on the scalp. Biopsies of affected skin stained positive with human keratin monoclonal antibodies HKN-6 and -7, specific for cortex and inner root sheath of normal human hair, respectively. Multiple warty dyskeratomas are a rare occurrence and their aetiopathogenesis remains elusive. Positive immunohistochemical st...
Trichoepitheliomas are trichogenic tumors that can have various clinical morphologies. These tumors are benign and differentiate toward the outer root sheath of the hair follicle. Solitary trichoepitheliomas arise sporadically, in contrast to multiple trichoepitheliomas, which are usually inherited as an autosomal dominant trait or as part of various genetic syndromes. We report a case of an ad...
INTRODUCTION MYELOGRAPHY with water-soluble contrast media to establish the diagnosis of prolapsed intervertebral discs is an established part of orthopaedic practice. The perfect myelographic contrast medium has not yet been developed. Ideally, it would be free of complications, be absorbed quickly from the CSF, and give a high diagnostic accuracy. The first agent to be used in Musgrave Park H...
Peroneal nerve entrapment is most commonly seen in the popliteal fossa. It is rarely caused by a ganglion. Intraneural ganglia, although uncommon and seldom cause serious complications, are well recognized and most commonly affect the common peroneal (lateral popliteal) nerve. Ganglionic cysts developing in the sheath of a peripheral nerve or joint capsule may cause compression neuropathy. The ...
Proliferating trichilemmal tumor is a rare tumor originating in the external root sheath, that is usually found in the scalp of middle-aged or elderly females. Its histologic appearance may not correlate with its clinical behavior. In addition, there are no guidelines available for the treatment of these tumors, making its management a challenge for physicians. We report the case of a 53 year-o...
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