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BackgroundThe acellular dermal matrix (ADM)-assisted breast reconstruction technique is widely known, but discouraging results due to early postoperative complications have been reported. As the literature identifies seroma as the most common issue after breast surgery without identifying its pathogenesis, we aimed to report the trend of postoperative daily serum collection after ADM-assisted breast reconstruction and compare it with data in the literature in order to discover more about this little-known topic.MethodsA retrospective study on 28 consecutive patients who received ADM-assisted breast reconstruction between February 2013 and February 2014 was performed. In order to reduce the number of variables that could affect serum production, only one brand of ADM was used and all tissues were handled gently and precisely. The daily drainage volume was recorded per patient during the first four days of hospitalization. Likewise, postoperative complications were noted during routine follow-up.ResultsIn total, five (17.9%) bilateral and 23 (82.1%) unilateral ADM-assisted breast reconstructions (33 implants) were performed. The mean age, body mass index, and length of hospital stay were 53.6 years, 21.3 kg/m2, and 4.5 days, respectively. One major complication led to implant loss (3.0%), and nine minor complications were successfully treated with ambulatory surgery (27.3%). Serum collection linearly decreased after 24 hours postoperatively.ConclusionsDaily drainage decreased following the theoretical decline of acute inflammation. In concordance with the literature, daily serum production may not be related to the use of ADM.

Introduction and aim. Gas gangrene is usually related to a trauma and can involve different districts of the body. It is a life-threatening condition, and its consequences lead to functional and aesthetical deficit. Atraumatic gas gangrene is a rare event, sometimes related to a Clostridium septicum (C. septicum) bacteremia. Aim of this article is to discuss existing literature about relation between colon adenocarcinoma and Clostridia infections, integrating with a case-report. Patients and methods. A 54-year-old obese female patient developed an atraumatic gas gangrene of the posterior trunk, started from a C. septicum bacteremia. Gas gangrene involved skin, soft tissues and muscles of the back. A multidisciplinary clinical and surgical management involved anesthesiologists, general and plastic surgeons. During hospitalization, an occult colon adenocarcinoma was diagnosed and recognized as the bacteremia trigger, and it was successfully addressed. The gangrene was properly treated with seriate surgical debridement and final soft tissue coverage. After a long hospital stay, the patient was discharged in stable clinical conditions. Results and conclusions. C. septicum gas gangrene remains one of the most fearful infections. An early diagnosis and a prompt antibiotic and surgical treatment, with life supportive care, are mandatory to avoid the necrotizing fasciitis spreading and the death of the patient. However, due to the rarity and variability of this condition, there is no standardized protocol for its treatment. Since a strong relation between C. septicum infection and colon malignancy is reported in literature, in cases of C. septicum bacteremia it should be mandatory to investigate gastrointestinal tract to exclude colon malignancy.

Many genetic alterations, including predisposing or somatic mutations, may contribute toward the development of melanoma. Although CDKN2A and CDK4 are high-penetrance genes for melanoma, MC1R is a low-penetrance gene that has been associated most consistently with the disease. Moreover, BRAF is the most frequently somatically altered oncogene and is a validated therapeutic target in melanoma. This paper reports a case of multiple primary melanoma with germline CDK4 mutation, MC1R variant, and somatic BRAF mutation in nine out of 10 melanomas, indicating that a common pathogenesis, because of a predisposing genetic background, may be shared among distinct subsequent melanomas of probable clonal origin. After 3 months of targeted therapy with BRAF inhibitor, our patient developed resistance with rapid progression of the disease leading to death. This is the first case in which early resistance to BRAF inhibitor has been reported in a patient with CDK4 germline mutation.