“…The striking and repeated observation that CDN is usually unilateral and occurs on the preferred sleeping side, suggests that pressure damage produced by the weight of the head pressing the ear into the pillow is the most important aetiological factor. Such a mechanism is similar to the cases of CDN described as a result of nuns' coiffs 7 or telephonists' ear pieces pressing on the ear 11 . When the ear is pressed into the pillow during sleep, the most protuberant portion of the ear is compressed more than other parts of the ear.…”
Cartilage excision alone has been demonstrated to be an effective technique in the treatment of chondrodermatitis nodularis (CDN), and in the short term is associated with an 80% cure rate. The objective of this study was to demonstrate that long-term disease control could be achieved using this surgical technique. Set in three hospital dermatology departments, 94 patients with CDN affecting the helix and antihelix were contacted by postal questionnaire at least 6 months after surgery. Replies were received from 77; 11 patients had died and six could not be traced. The main outcome measure was the identification of those patients in remission and those with disease recurrence. Sixty-two helix lesions were followed up for a mean of 52 months (range 8-99). There was recurrence in 10 patients (all men; 16%). Twenty antihelix lesions were followed up for a mean of 55 months (range 8-93). There was recurrence in five patients (all women; 25%). In conclusion, this study confirms that only cartilage needs to be excised for the long-term effective treatment of CDN. The only relevant aetiological factor identified was that all except one patient slept on the same side as the CDN. We believe that pressure on the ear during sleep causes CDN. This is most evident on the most protuberant part of the ear.
“…The striking and repeated observation that CDN is usually unilateral and occurs on the preferred sleeping side, suggests that pressure damage produced by the weight of the head pressing the ear into the pillow is the most important aetiological factor. Such a mechanism is similar to the cases of CDN described as a result of nuns' coiffs 7 or telephonists' ear pieces pressing on the ear 11 . When the ear is pressed into the pillow during sleep, the most protuberant portion of the ear is compressed more than other parts of the ear.…”
Cartilage excision alone has been demonstrated to be an effective technique in the treatment of chondrodermatitis nodularis (CDN), and in the short term is associated with an 80% cure rate. The objective of this study was to demonstrate that long-term disease control could be achieved using this surgical technique. Set in three hospital dermatology departments, 94 patients with CDN affecting the helix and antihelix were contacted by postal questionnaire at least 6 months after surgery. Replies were received from 77; 11 patients had died and six could not be traced. The main outcome measure was the identification of those patients in remission and those with disease recurrence. Sixty-two helix lesions were followed up for a mean of 52 months (range 8-99). There was recurrence in 10 patients (all men; 16%). Twenty antihelix lesions were followed up for a mean of 55 months (range 8-93). There was recurrence in five patients (all women; 25%). In conclusion, this study confirms that only cartilage needs to be excised for the long-term effective treatment of CDN. The only relevant aetiological factor identified was that all except one patient slept on the same side as the CDN. We believe that pressure on the ear during sleep causes CDN. This is most evident on the most protuberant part of the ear.
“…Nodules on the antihelix attributed to prolonged pressure from telephone ear-pieces have been reported in telephone operators, and similar changes in nuns from the bonnet of their religious habit. It has, however, been suggested that these nodules are clinically unlike those of chondrodermatitis, that they resolve spontaneously following removal of the initiating factor, and should therefore be regarded as a separate entity (Klauder, 1930).…”
“…In view of the present study, how reliable are Shuman and Helwig's criteria for histopathologic diagnosis? These are: "(1) Nodular hyperplasia of the epidermis; (2) fibrinoid alteration of the dermal collagen; (3) proliferation of a richly vascularized granulation tissue associated with an inflammatory exúdate; (4) Histologically in this condition the changes are primarily in the collagen without any changes in the cartilage. The secondary changes then extend in both directions, from the collagen down into the cartilage, and from the collagen up into the epidermis, giving an abnormal necrotic keratotic plug overlying the area.…”
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