Dr Jones noted on examination a clear, creamy discharge from the respondent's umbilicus but found no anatomical abnormality. He looked for foreign bodies and debris, which are said to be common causes of a discharging umbilicus, but found nothing of the kind and could identify no cause of the problem. A swab pathologically examined recorded no growth. The only possible cause that occurred to Dr Jones was that of a patent urachus. He sought a consultation for the respondent with a urologist in order to investigate that possibility but there was a long waiting time of some six weeks which did not suit the respondent and, in the event, Dr Jones arranged for him to see the appellant, which he did on 19 March. The respondent then told the appellant that he had had an intermittently discharging umbilicus for some months, that he had used Betadine on it, that his general health was good and that he had not been in any other way inconvenienced. On examination of the respondent's umbilicus the appellant found, as he swore, no obvious sinus or abnormality and no redness or discharge. He could see neither any discharge nor a cause for a discharge but felt a small palpable defect - a hole - in the linea alba below the umbilicus. Otherwise the examination was normal. It is notable that the respondent in his evidence was unable to say whether, when the appellant first saw him, the umbilicus was discharging. The appellant considered a number of possible causes for the discharge that the respondent described to him, including the possibility of a pilonidal sinus, a sebaceous cyst and a patent urachus, apparently discounting the last - a very rare condition. He was unable by examination to ascribe a relevance to the palpable defect but, having made no other pathological finding, he felt (as he put it) "that maybe the defect represented one of those rarer causes of discharge which we couldn't see." Having regard to the history that the respondent had related, to the findings at examination and to the respondent's expressed wish to achieve a speedy resolution of the then long-standing complaint, the appellant recommended that the umbilicus be surgically explored. He swore in cross-examination - and no contradiction was offered - that the respondent was "very happy with my advice to explore because he was sick of the problem". According to the respondent's evidence the appellant told him that he thought the problem was a small hernia; and he understood that an operation was to be conducted to repair the hernia and explore the umbilicus - "I think a bit of both". Arrangements were made for the appellant to carry out a procedure at St. John of God Hospital, Geelong, on 26 March. As it was, the operation to which the respondent on 22 March gave his written consent was described only as "exploration of umbilicus". On 26 March, at the appellant's invitation, Dr Jones assisted at the operation. The umbilicus was (as the appellant swore) thoroughly examined under anaesthetic and found to be clean and healthy, with no abnormality. An exploratory operation was performed and a small hole in the linea alba was repaired with monofilament nylon sutures. There was no herniation and no sinuses or cysts were found. The skin, which was clean, was closed only lightly with two or three sutures, in accordance with the appellant's normal practice, to allow for drainage. No drain was inserted and no intravenous antibiotic cover was provided, the appellant seeing no need for either. The appellant, inspecting the wound some hours after the operation, was content with what he saw, and the respondent remained in hospital overnight.