BackgroundOral cavity cancer ranks sixth among all cancers worldwide. India has the most oral cancer cases and accounts for one-third of the global oral cancer burden. Oral cavity cancer is known to be associated with an elevated likelihood of locoregional recurrences, which account for the bulk of post-surgery and radiotherapy treatment failures. Mitomycin C (MMC) is an antineoplastic and antibiotic agent that is administered topically rather than intravenously to treat bladder and intraperitoneal tumors to avoid recurrences. This study aimed to investigate the use of injection MMC as a local application on surgical resection beds for patients undergoing surgery for oral cancer and to assess its efficacy in preventing regional recurrences. MethodologyIn this prospective, interventional, pilot study, patients were assigned randomly to two groups using simple randomization. Group A involved the application of two gauze pieces soaked with MMC injection. Group B involved the application of two gauze pieces soaked with a 10% betadine solution. During the pectoralis major myocutaneous flap harvest procedure for reconstruction, two gauze pieces soaked with either injection MMC solution (20 mg MMC in 20 mL of 0.9% normal saline) or 10% betadine solution were placed on the surgical resection bed for a 45-minute contact period. Patients were evaluated daily in the postoperative period for local complications. Regular follow-up visits were scheduled for 15 months of follow-up. ResultsAfter exclusions at various phases, the final analysis included 50 patients in Group A and 50 patients in Group B. Minor complications, specifically blackening of the skin flap in the neck resulting in surgical site infections, were observed in 16% (eight patients) of the MMC group and in 6% (three patients) of the betadine group (p = 0.1997) patients. In the MMC group, two (4%) patients experienced locoregional recurrences at three months, four (8%) patients at six months, six (12%) patients at nine months, eight (16%) patients at 12 months, and 10 (20%) patients at 15 months of follow-up. In contrast, locoregional recurrences occurred in two (4%) patients in the betadine group at three months, six (12%) patients at six months, nine (18%) patients at nine months, 12 (24%) patients at 12 months, and 15 (30%) patients at 15 months. Although the difference in locoregional recurrences between the two groups was not statistically significant, there was a trend of decreasing locoregional recurrences in the MMC group relative to the betadine group as the duration of follow-up increased. In the subgroup analysis of patients with pathological extranodal extension (ENE), only 10 of 18 patients with ENE in Group A (55.55%) experienced a recurrence, whereas all 12 patients with ENE in Group B (100%) experienced a recurrence within the same time frame. This difference in locoregional recurrence rates between the two groups was statistically significant, with a p-value of 0.0100. ConclusionsOur study demonstrated that the local administration of MMC on sur...
Clearance of the axillary tissue during operation is still the mainstay of treatment for node positive breast cancer. Level III axillary nodal clearance is supposed to increase the risk of lymph edema of arm, along with other factors. However, preservation of the fascia over the axillary vein during surgery reduces the risk of lymph edema greatly. In this study we measured the incidence of armlymphoedema that occured after Level III axillary clearance for breast cancer. During surgery, dissection over the anterior surface of axillary vein was limited to preserve the fascia covering axillaryvein. Other factors commonly implicated in the development of post-operative arm lymphoedema were also documented and their effect analysed. Forty three patients underwent operation for breast cancer including complete axillary clearance up to Level III. The incidence of lymphoedema was 25.5% (11 out of 43 patients). None of these patients had severe lymphoedema. On multivariate analysis, no other associated factors like BMI, chemotherapy and nodal metastases had any bearing on the development of lymph edema. We conclude that Level III axillary clearance of axilla is safe and not excessively morbid in terms of developing arm lymphoedema provided the fascia over axillary veinis preserved.
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