Trichodiscomas are benign hamartomas of the mesenchymally derived perifollicular
fibrous root sheath.
Dermoscopy revealed a combination of linear vascular reddish structure and perifollicular
white halos measuring 0.5 to 1.2 mm (Fig.
However, perivascular and perifollicular
infiltrates can be seen after a few weeks, and a similar amount of shortening and shrinkage in collagen fibers is shown in electron microscopic evaluation.
Therefore several studies have used the information obtained by use of power Doppler for assessing perifollicular
blood flow to determine the quality of the oocyte and to predict the potential success of ART cycles (5,6)
Follicular fluid VEGF levels directly correlate with perifollicular
blood flow in normoresponder patients undergoing IVF.
The evaluated parameters included perifollicular
changes, vascularity, white dots, keratin plugs, number of follicular ostia.
His physical examination was remarkable for swollen and bleeding gum, follicular hyperkeratosis with perifollicular
purpura at the lower extremities, and soft tissue swelling of both knees, which were painful during passive motion with bilateral 30[degrees] flexion contracture of the knees (Figure 1a and b).
Becker melanosis is associated with homogenous brown patches with perifollicular
hypopigmentation, sometimes with a faint reticular pattern.
parakeratosis and follicular horn plug are indicative of pityriasis rubra pilaris.
We describe a case of scurvy presenting with anemia, perifollicular
hemorrhages, and extensive ecchymoses and highlight the importance of recognizing vitamin C deficiency as a cause of bleeding diathesis.
Skin biopsy is generally unnecessary, as the histopathologic findings are nonspecific: perivascular and perifollicular
inflammatory infiltrates in papulopustular rosacea, dilated blood vessels in the erythematotelangiectatic rosacea, and sebaceous gland hyperplasia and dermal fibrosis in phymatous rosacea.
Lichen scrofulosorum is an eruption of multiple, small, grouped, asymptomatic, firm, perifollicular
, lichenoid papules or plaques often affecting children and adults with underlying diseases of bone and lymph nodes [16, 26].