Search Results for: isthmic-catagen cyst

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A Clinical Atlas of 101 Common Skin Diseases

Cysts and Cystic Hamartomas

Papules, nodules, and tumors that, on gross examination, are usually skin colored and, on histopathologic examination, consist of an epithelium-lined sac that contains fluid, cells, or both in the case of true cysts and of cysts that are associated with other epithelial elements of adnexa in the case of cystic hamartomas.

Therapeutic Strategies in Dermatology

Hidradenitis Suppurativa: Key Points

…llae, and inframammary areas. Areas affected by HS are characteristically marked by heterogeneous skin lesions, ranging from cysts, nodules, sinus tracts, and inflamed abscesses. In rare cases, lesions of pyoderma gangrenosum can occur concurrently…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Epidermal Cyst and Epidermoid Cyst?

…to the dermis and is believed to form a cystic structure there, eventually cornifying and coming to resemble an infundibular cyst. Any cyst on the palms and soles that seems to be infundibular cannot be that because there are no infundibula on volar…

Therapeutic Strategies in Dermatology

Alopecia: Key Points

…usually 2-3 months following medical illness, injury, giving birth, or stress Metabolic Shift in ratio to mostly telogen and catagen hairs with premature termination of anagen follicles Spontaneous recovery over 6 months Anagen effluvium Rapid onset…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Eruptive Vellus Hair Cyst?

…o like that of the infundibulum of epidermis, the infundibulum and isthmus being in continuity normally. In short, cutaneous cysts, cystic hamartomas, and cystic neoplasms may display more than one type of adnexal epithelium in their lining. That is…

Dermatoscopic pattern of digital mucous cyst: report of three cases

Dermatoscopic pattern of digital mucous cyst: report of three cases

…rmoscopy with compression, with presence of bright white structures (C). (Copyright: ©2014 Salerni et al.) Discussion Mucous cysts are small cystic lesions that occur intradermally on the dorsal aspect of the interphalangeal joint and distal phalanx…

Isolated giant molluscum contagiosum mimicking epidermoid cyst

Isolated giant molluscum contagiosum mimicking epidermoid cyst

…eased linear vascularity on the periphery (Figure 2). Excisional biopsy was offered with preliminary diagnosis of epidermoid cyst and isolated giant molluscum. Histopathologically epidermal hyperkeratosis, acanthosis, widespread viral cytopathic…

Therapeutic Strategies in Dermatology

Granuloma Annulare: Key Points

Key Points Granuloma annulare is a reactive inflammatory skin condition, which commonly presents as annular pink, erythematous thin plaques on the distal extremities. Granuloma annulare usually presents as localized disease, generalized plaques or…

Histologic Diagnosis of Inflammatory Skin Diseases

Hair Follicles

…ells arranged in a pattern unique to normal skin, except for that in follicles during the involutional phase of their cycle (catagen) when an appearance indistinguishable from that of isthmic epithelium is assumed by them. That epithelium, both of…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…fundibular cyst” is an epidermal cyst because the infundibulum is a component of the epidermis. In contrast, an “isthmiccatagen cyst” is a follicular cyst, the lining of it being like the isthmus of a follicle and of a follicle…

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