Anatomical variations are observed at times during a routine dissection process and some of them are clinically relevant as they can lead to certain clinical presentations or situations that are difficult to anticipate without the knowledge about their possibility. The unilateral non-syndromic complete absence of pectoral muscles is very rare. Their absence is always found to be associated with syndromes like Poland syndrome or Sprengel\'s deformity. During the routine anatomical dissection, we encountered two cases of non-syndromic complete unilateral absence of the pectoralis minor muscle. On further inspection of the cadaver in both the cases, no other bony (ribs, scapula), vascular, breast abnormalities, or muscular aplasia (fibers of the serratus anterior or pectoralis major) was noted. As the pectoralis minor muscle serves as the potential surgical landmark and can also be used as the myo-cutaneous flaps for facial reanimation surgeries and in thumb opponensplasty, the absence of the pectoralis minor muscle would come as a surprise for the surgeons during the process of harvesting the flap for these procedures, so the possibility of this kind of rare variation should be documented.

Poland syndrome (PS) is a rare congenital musculoskeletal entity occurring in approximately 1 in 30,000 newborns that manifests with variable symbrachydactyly, ipsilateral costochondral deformities, an absence of pectoral muscles, and breast underdevelopment. These have potential impacts on social, somatic, and psychological functionality, often leading affected individuals to seek expert opinions on corrective surgery. Due to phenotypic variability, strict management guidelines are lacking, with treatment decisions often based on the specialist\'s personal experience rather than published evidence. Comprehensive imaging with CT and MRI with 3D reconstruction is crucial for providing a descriptive assessment of musculoskeletal defects. Management is multidisciplinary, involving thoracic, plastic, and pediatric surgeons and hand surgery specialists, as well as psychologists and developmental growth specialists. Surgery should achieve both structural and cosmetic correction to reverse the psychological and social impact and achieve patient satisfaction. We aim to provide thoracic surgeons the essential answers for sharing with affected adult individuals during consultations focusing on chest surgical correction.

This case study highlights a 79-year-old man with chronic low back pain attributed to severe lumbar scoliosis. Physical examination revealed the unilateral absence of pectoral muscles and ipsilateral hand anomalies, indicative of Poland syndrome (PS). The patient also experienced depression due to chronic pain and PS-related anomalies. A multi-disciplinary approach proved effective in alleviating both pain and depression.

暂无摘要。

UNASSIGNED: Poland syndrome is an occasional congenital malformation characterized by unilateral chest wall dysplasia and ipsilateral upper limb abnormalities. An association between Poland syndrome and breast cancer has been reported, but no clear etiological link between Poland syndrome and breast tumors has been established. We report a case of Poland syndrome combined with breast cancer and analyzed the clinical features of breast cancer in this case and its influence on the choice of treatment for breast cancer.
UNASSIGNED: In February 2022, we admitted a 47-year-old woman with Poland syndrome involving the right limb combined with right-sided breast cancer. After admission, the patient was given eight cycles of neoadjuvant therapy and underwent a modified radical mastectomy on September 7, 2022. Absence of right pectoralis major muscle and pectoralis minor muscle, thoracic deformity, and an adhesive band along the side of the sternum to the right axilla were observed during the operation. After surgery, the incision achieved grade-A healing, and the targeted therapy was continued for 1 year. The patient was followed up for 8 months after surgery, and the limb function of the affected side recovered well, and no obvious subcutaneous effusion, flap necrosis, upper limb edema, and other complications were observed.
UNASSIGNED: The anatomic variation of patients with Poland syndrome has some influence on the selection of surgical methods for breast cancer, but whether it would affect the prognosis of patients is unknown. To clarify the relationship between Poland syndrome and breast cancer, we need more cases to conduct etiological studies in the future.

BACKGROUND: In the past, several publications have described breast reconstruction techniques that utilize the contralateral breast; however, interest diminished because of technical difficulty, scarring, and poor aesthetic results.
OBJECTIVE: This study aimed to present a new breast reconstruction technique that uses a combination of the breast-pectoralis flap and the abdominal advancement flap.
METHODS: This retrospective study analyzed the results and complications of 20 consecutive breast reconstructions with the breast-pectoralis flap technique.
RESULTS: The authors present a series of 20 breast reconstructions that utilized the breast-pectoralis flap. Delayed breast reconstruction was performed in 13 cases (65%), breast reconstruction in 5 patients (25%) with Poland syndrome, sequela correction after a chest wall sarcoma in 1 patient (5%), and sequela correction after breast cystic lymphangioma resection in 1 patient (5%). One complication required surgical reintervention without long-term consequences. The outcomes were considered very good in 50% of the cases, good in 45%, and fair in 5%.
CONCLUSIONS: The combination of the breast-pectoralis flap and the abdominal advancement flap is an interesting advance in breast reconstruction. Evaluation of the presented cases suggests wider indications for this technique.
METHODS:

Poland syndrome is a congenital anatomical anomaly, characterised by partial or total aplasia of one side of the body causing abnormalities affecting the chest, shoulder, and upper limb. The exact mechanism that leads to this syndrome is unknown, but an abnormality in the vasculature formation or interruption of the blood supply of the subscapular artery and its branches early in development may be the main cause. Depending on the underlying mechanism, the syndrome has several expressions with some hardly being detectable and others not even being compatible with life. Here, we present a case of pregnancy from an assisted reproductive technology (ART) cycle with in vitro maturation (IVM) and rescue intra cytoplasmic sperm injection (ICSI), which resulted in the in-utero death of the foetus. The subsequent necropsy revealed a variation of Poland syndrome.

UNASSIGNED: Poland syndrome is a rare congenital syndrome that is characterized by partial or complete unilateral absence of the pectoralis major muscle, congenital malformation of the hand and deformation of the chest. Often the patients has abnormalities of the nipple-areolar complex. Here, we present a case of surgical treatment of local chest deformity with patient with Poland syndrome.
UNASSIGNED: We observed a patient, an 18-year-old man. The parents noticed the deformation of the chest from birth. The patient did not receive any treatment until adulthood. The patient contacted our clinical research center to correct chest deformity. After clinical and diagnostic procedures, the patient underwent surgical operation: open thoracoplasty with installation of a wire-frame construction. The early postoperative period was uneventful. Early postoperative outcome was assessed 6 months after surgery.
UNASSIGNED: Our experience shows that thoracoplasty using a wire-frame construction is a good method for correcting local chest deformities in patients with Poland syndrome.

The key feature of Poland syndrome is asymmetry in the chest wall. Clinicians should be alert to abnormalities of the chest wall as well as the lungs if there is abnormal chest radiograph lucency.

Poland syndrome is indeed a rare congenital malformation that can present with various degrees of thoracic and homolateral upper limb anomalies. The classic features of Poland syndrome include agenesis or hypoplasia of the sternocostal head of the pectoralis major muscle, hypoplasia of the nipple, absence of subcutaneous fat, multiple rib abnormalities, and sometimes Sprengel deformity (elevation of the scapula). Additionally, ipsilateral symbrachydactyly (combination of \"short fingers\" with cutaneous syndactyly [fused fingers]) may also be observed. However, it\'s important to note that not all of these findings are always present in every patient, and the combination of features can vary greatly. Surgical treatment for Poland syndrome primarily focuses on improving pulmonary functions resulting from severe thoracic deformities. However, it is frequently performed with the additional goal of enhancing cosmetic appearance. In recent times, the use of adipose-derived mesenchymal stem cells and fat transfer has shown promising results for correcting chest defects and breast augmentation. In our study, we present a series of 3 cases that were referred to our institution due to thoracic deformities associated with Poland syndrome.