Anomalies of lateralization in man: a case of total situs inversus

Situs inversus in cardiothoracic surgery and its advances: a case report

Situs inversus is a rare congenital abnormality, rarely encountered by surgeons. Despite its sparsity, knowledge and preparation for surgery in these individuals is imperative. In the field of cardiothoracic surgery new technology and techniques have offered new avenues to avoid complications. I will detail a case of a 73-year-old gentleman who attended for treatment of lung cancer with a background of situ inversus.

Acute cholangitis with acute myeloid leukaemia: A case report

The report describes a middle-aged woman with acute cholangitis combined with acute myeloid leukaemia, and examination suggesting that she was also a patient with a rare case of total visceral inversion. The analysis of this case helps clinicians to deepen the differential diagnosis of rare diseases and improve the timeliness and accuracy of diagnosis.

A case report of perihilar cholangiocarcinoma in a patient with situs inversus totalis

Situs inversus totalis is a rare congenital malformation in which organs are positioned in a mirror-image relationship to normal conditions. It often presents with vascular and biliary malformations. Only a few reports have pointed out the surgical difficulties in patients with situs inversus totalis, especially in those with perihilar cholangiocarcinoma. This report describes a 66-year-old male patient who underwent left hemihepatectomy (S5, 6, 7, and 8) with combined resection of the caudate lobe (S1), extrahepatic bile duct, and regional lymph nodes for perihilar cholangiocarcinoma with situs inversus totalis. Cholangiocarcinoma was mainly located in the perihilar area and progressed extensively into the bile duct. Surgery was performed after careful evaluation of the unusual anatomy. Although several vascular anomalies required delicate manipulation, the procedures were performed without major intraoperative complications. Postoperatively, bile leakage occurred, but the patient recovered with drainage treatment. The patient was discharged on the 29th postoperative day. Adjuvant chemotherapy with S-1 was administered for approximately 6 months. There was no recurrence 15 months postoperatively. Appropriate imaging studies and an understanding of unusual anatomy make surgery safe and provide suitable treatment for patients with situs inversus totalis.

A case report and anesthetic implications of situs inversus totalis in video-assisted thoracoscopic pulmonary resection

Introduction and importance

Reports are limited on video-assisted thoracoscopic surgery for lung malignancy of patients with situs inversus totalis (SIT). Patients with SIT have significant anatomic differences with implications that are important for surgery, anesthesia, and nursing to understand in order to provide care for this patient population.

Case presentation

A 64-year-old man with SIT and lung adenocarcinoma needed flexible bronchoscopy and wedge resection of a 9×8 mm adenocarcinoma in the right upper lobe and underwent video-assisted thoracoscopic surgery.

Clinical discussion

Preoperative planning, including collaboration with the surgical team, allowed safe monitoring, induction of anesthesia, and airway isolation in this patient allowing them to have successful resection of their pulmonary malignancy. Postoperative care was enhanced by detailed communication and understanding of the patient's anatomy and implications of this condition for post anesthesia care unit nursing care.

Conclusion

Patients with rare clinical conditions and backgrounds may require surgical and anesthetic intervention. The authors describe important anesthetic considerations of preoperative evaluation, airway management, cardiac monitoring, and vascular access that should be noted and taken into account for patients with SIT. Proper preparation, planning, and communication allow for patients with SIT to safely undergo surgical procedures.

Laparoendoscopic Single-Site Surgery (LESS) for Right Donor Nephrectomy in a Patient With Situs Inverses Totalis: A Novel Approach for Such a Case

Situs inversus totalis (SIT) is a rare congenital condition where the organs of the thorax and abdomen are arranged in a mirror image reversal of their normal position. Patients with SIT present unique challenges in surgical procedures, particularly in laparoscopic surgeries, due to the need to reverse the operator's perspective, technical difficulty in handling the instruments, anatomical variations, and an increased risk of intraoperative complications. In this case report, we present the first case in the English literature of a 49-year-old Arabic male patient with SIT who underwent a successful right laparoendoscopic single-site surgery donor nephrectomy. We described the surgical technique used and highlighted the key challenges faced and overcome during the procedure.

Congenital tuberculosis with tuberculous meningitis and situs inversus totalis: A case report

BACKGROUND

Congenital tuberculosis (TB), tuberculous meningitis, and situs inversus totalis are rare diseases. We here report a patient who simultaneously suffered from these three rare diseases. There is currently no such report in the literature. Congenital TB is easily misdiagnosed and has a high case fatality rate. Timely anti-TB treatment is required.

CASE SUMMARY

A 19-day-old male newborn was admitted to hospital due to a fever for 6 h. His blood tests and chest X-rays suggested infection, and he was initially considered to have neonatal pneumonia and sepsis. He did not respond to conventional anti-infective treatment. Finally, Mycobacterium tuberculosis was found in sputum lavage fluid on the 10^th day after admission. In addition, the mother's tuberculin skin test was positive, with an induration of 22 mm, and her pelvic computed tomography scan suggested the possibility of tuberculous pelvic inflammatory disease. The child was diagnosed with congenital TB and immediately managed with anti-TB therapy and symptomatic supportive treatment. However, the infant's condition gradually worsened and he developed severe tuberculous pneumonia and tuberculous meningitis, and eventually died of respiratory failure.

CONCLUSION

If conventional anti-infective treatment is ineffective in neonatal pneumonia, anti-TB treatment should be considered.

How Asymmetries Evolved: Hearts, Brains, and Molecules

Humans belong to the vast clade of species known as the bilateria, with a bilaterally symmetrical body plan. Over the course of evolution, exceptions to symmetry have arisen. Among chordates, the internal organs have been arranged asymmetrically in order to create more efficient functioning and packaging. The brain has also assumed asymmetries, although these generally trade off against the pressure toward symmetry, itself a reflection of the symmetry of limbs and sense organs. In humans, at least, brain asymmetries occur in independent networks, including those involved in language and manual manipulation biased to the left hemisphere, and emotion and face perception biased to the right. Similar asymmetries occur in other species, notably the great apes. A number of asymmetries are correlated with conditions such as dyslexia, autism, and schizophrenia, and have largely independent genetic associations. The origin of asymmetry itself, though, appears to be unitary, and in the case of the internal organs, at least, may depend ultimately on asymmetry at the molecular level.

Minimally invasive esophagectomy with intrathoracic anastomosis in a situs inversus totalis patient

Situs inversus totalis (SIT) is a rare congenital condition, which is characterized by abnormal placement of the thoracic and abdominal organs. The incidence of this condition is estimated to be from 1/8000 to 1/25,000. There have been minimal reports on SIT patients with esophageal cancer. In this report, we discuss a patient with SIT complicated by middle and lower esophageal cancer who underwent laparoscopic and thoracoscopic esophagectomy with intrathoracic anastomosis, and provide useful information with regards to treatment of this rare condition.

Laparoscopic sleeve gastrectomy in a patient with situs inversus totalis: A case report

Situs inversus totalis (SIT) is a rare genetic autosomal recessive disorder; however, in identical twins, it may be misinterpreted as X-linked disorder. SIT describes a 270° counterclockwise rotation of the intra-abdominal organs. Laparoscopic surgery in patients with SIT may be more difficult than in normal patients due to its mirror image anatomy. We report a case of a morbidly obese patient (body mass index 36 kg/m²) with SIT who underwent successful laparoscopic sleeve gastrectomy. This article describes all technical details and difficulties of this operation due to the presence of SIT. When performed by an expert laparoscopic surgeon, however, laparoscopic sleeve gastrectomy appears to be a feasible, effective, and safe procedure to treat morbidly obese patients with SIT.

Bilaterally Symmetrical: To Be or Not to Be?

We belong to a clade of species known as the bilateria, with a body plan that is essentially symmetrical with respect to left and right, an adaptation to the indifference of the natural world to mirror-reflection. Limbs and sense organs are in bilaterally symmetrical pairs, dictating a high degree of symmetry in the brain itself. Bilateral symmetry can be maladaptive, though, especially in the human world where it is important to distinguish between left and right sides, and between left-right mirror images, as in reading directional scripts. The brains of many animals have evolved asymmetries, often but not exclusively in functions not dependent on sensory input or immediate reaction to the environment. Brain asymmetries in humans have led to exaggerate notions of a duality between the sides of the brain. The tradeoff between symmetry and asymmetry results in individual differences in brain asymmetries and handedness, contributing to a diversity of aptitude and divisions of labor. Asymmetries may have their origin in fundamental molecular asymmetries going far back in biological evolution.

A detailed pathway and termination of thoracic duct in a Japanese female cadaver with situs inversus totalis

Although the thoracic duct (TD) requires special attention during thoracic surgery, to our knowledge, its detailed course in the situs inversus totalis (SIT) case has not been reported. We encountered an 86-year-old Japanese female cadaver with SIT during a student anatomical practice and examine the TD. The TD originated from the cisterna chyli at the level of the 2nd lumbar vertebra, ascended along with the left side of aorta and then passed behind the aortic arch on the right side of the esophagus. The TD turned right at the first thoracic vertebra and finally emptied into the basal portion of the right external jugular vein without branching. The present running pathway of the TD was approximately in the inverted position of the normal, but its connection site to the vein and manner was very rare and has not been reported to date. Therefore, this junctional anomaly may occur during the developmental period in SIT. Further anatomical and embryological studies are required, but this report provides useful morphogenetic information of the TD and lymphovenous junction in SIT.

Hand-assisted laparoscopic radical nephrectomy for renal cell carcinoma in a patient with situs inversus totalis

Situs inversus totalis (SIT) is a rare condition with left-right mirror imaging of both abdominal and thoracic organs. While this configuration is rarely of medical importance, an understanding of this unique anatomy is essential in the setting of surgical intervention. Here we review a case of renal cell carcinoma (RCC) in the setting of SIT. The patient underwent a hand-assisted laparoscopic radical nephrectomy. Pathology revealed pT3aNxMx Fuhrman Grade 2 clear cell RCC.

Complete situs inversus - is it a contraindication for organ donation?

Complete situs inversus, (SI), the total transposition of thoracic and abdominal organs, is rare and is considered a contraindication for organ donation. We report a patient of complete SI, who underwent donor nephrectomy. A 21-year-old male, without significant medical history, presented for voluntary living-unrelated renal donation and was found to have complete SI on evaluation and underwent right donor nephrectomy. The recipient is doing well on the follow-up. Meticulous surgical planning while selecting kidneys would enable renal donation even in cases of complete SI.

Evolution of cerebral asymmetry

The human brain is often characterized in terms of a duality, with the left and right brains serving complementary functions, and even individuals are sometimes classified as either "left-brained" or "right-brained." Recent evidence from brain imaging shows that hemispheric asymmetry is multidimensional, comprised of independent lateralized circuits. Cerebral asymmetries, which include handedness, probably arise in phylogenesis through the fissioning of ancestral systems that divided and lateralized with increasing demand for specialization. They also vary between individuals, with some showing absent or reversed asymmetries. It is unlikely that this variation is controlled by a single gene, as sometimes assumed, but depends rather on complex interplay among several, perhaps many, genes. Hemispheric asymmetry has often been regarded as a unique mark of being human, but it has also become evident that behavioral and cerebral asymmetries are not confined to humans, and are widespread among animal species. They nevertheless exist against a fundamental background of bilateral symmetry, suggesting a tradeoff between the two. Individual differences in asymmetry, moreover, are themselves adaptive, contributing to the cognitive and behavioral specializations necessary for societies to operate efficiently.

Laparoscopic radical nephrectomy for a right renal tumor with renal vein tumor thrombus in a patient with situs inversus totalis

Situs inversus totalis (SIT) is a rare congenital anomaly characterized by complete inversion of the thoracic and abdominal organs. Many intra-abdominal and vessel anomalies have been reported in association with SIT. However, there have been no reports on the use of laparoscopic radical nephrectomy with thrombectomy for renal vein thrombus, which is considered as a safe and feasible procedure, in patients with SIT. We herein present the case of an 80-year-old man with SIT who was preoperatively diagnosed with a right renal tumor and renal vein tumor thrombus. The patient underwent laparoscopic right nephrectomy and tumor thrombectomy with no intraoperative complications. To ensure a safe procedure, the anatomy and vessels were carefully evaluated preoperatively using 3-D multiplanar reconstructed CT imaging. Assessing anatomical structures leads to safer laparoscopic radical nephrectomy for renal cell carcinoma with venous tumor thrombus in patients with SIT.

Variations in vascular anatomy and unilateral adrenal agenesis in a female cadaver with situs inversus totalis

PURPOSE

Situs inversus totalis is mirror transposition of thoracic and abdominal organs. Very few reports have been published on anatomic dissections of cadavers with this condition.

METHODS

This work describes a case of situs inversus totalis identified during the anatomical dissection of a 91-year-old woman.

RESULTS

Thoracic and abdominal viscera were inverted, but otherwise normal. The aorta originated from the right ventricle, which exhibited characteristics of the systemic ventricle. The pulmonary artery originated from the left ventricle, which had a tricuspid valve, three papillary muscles, thick trabeculae, a supraventricular crest, and septomarginal trabecula. The atrial situs was concordant with ventricular morphology. Lungs and paranasal sinuses were not suggestive of Kartagener's syndrome. Only the right adrenal gland was present, and variations in vascular anatomy were observed. The latter included: the celiac trunk branching into a phrenic artery, the splenic artery and a right gastric artery; the common hepatic artery originating from the superior mesenteric artery; and, on the left side, two inferior thyroid arteries, both originating from thyrocervical trunk. The occurrence of a double inferior thyroid artery and agenesis of adrenal gland was never communicated in situs inversus. Embryonic origin of celiac trunk and superior mesenteric artery variations could be explained by the separation at higher levels of the longitudinal anastomoses formed between the four roots of omphalomesenteric artery.

CONCLUSION

It can be hypothesized that this phenomenon could occur more frequently in situs inversus than in situs solitus. However, the number of cases investigated in such detail is too small to draw firm conclusions.

Video-assisted thoracoscopic bisegmentectomies for double primary lung cancers in a patient with situs inversus totalis

Situs inversus totalis (SIT) is a rare anomaly. A limited number of reports document surgery for lung cancer in patients with SIT. We report the case of a 68-year-old man with SIT who underwent video-assisted thoracoscopic bisegmentectomies for synchronous double primary lung cancers. Preoperative evaluation of the pulmonary vessels and bronchus by three-dimensional computed tomography (CT) was unavailable owing to the patient's renal function disorder. However, the procedure was safely completed by adequate anatomic identification and careful operative manipulation based on plain CT study. His postoperative course was uneventful, and no recurrence has been observed 3 years after surgery.

The Many Sides of Hemispheric Asymmetry: A Selective Review and Outlook

Hemispheric asymmetry is commonly viewed as a dual system, unique to humans, with the two sides of the human brain in complementary roles. To the contrary, modern research shows that cerebral and behavioral asymmetries are widespread in the animal kingdom, and that the concept of duality is an oversimplification. The brain has many networks serving different functions; these are differentially lateralized, and involve many genes. Unlike the asymmetries of the internal organs, brain asymmetry is variable, with a significant minority of the population showing reversed asymmetries or the absence of asymmetry. This variability may underlie the divisions of labor and the specializations that sustain social life. (JINS, 2017, 23, 710-718).

Jejunojejunal intussusception after Roux-en-Y gastric bypass in a situs inversus totalis patient: A case report

INTRODUCTION

Situs inversus totalis (SIT) is an uncommon clinical manifestation. Patients with SIT typically have malformation in the thorax and abdomen. The incidence of SIT ranges from 1/10,000 to 1/20,000 (Al-Jumaily and Hoche. J Laparoendosc Adv Surg Tech A 2001;11:229). Jejunojejunal intussusception is a rare complication after Roux-en-Y gastric bypass. Intussusception in adult cases accounts for 5% of adult intestinal obstruction cases, while in children, the occurrence is high and the majority of them are idiopathic cases.

CASE REPORT

Here, we present an uncommon case of jejunojejunal intussusception after Roux-en-Y gastric bypass in an SIT patient. We performed reduction at the beginning and resection was done finally.

DISCUSSION

We explore the potential causes and discuss the diagnosis and therapy.

CONCLUSION

Intussusception in an SIT patient is an uncommon case. The symptoms are vague, and it is difficult to diagnose. Clinicians should be vigilant postoperatively, especially when abdominal pain after gastrointestinal surgery occurs. It is a rare case worth learning.

Laparoscopic Sleeve Gastrectomy in Situs Inversus Totalis: a Case Report and Comprehensive Literature Review

The aim of this study is to review the reliability of laparoscopic obesity operations in patients with situs inversus totalis(SIT). A new case of SIT was presented together with a literature review of published English language studies on laparoscopic gastric banding (LAGB), laparoscopic gastric bypass (LRYGB), laparoscopic sleeve gastrectomy (LSG), laparoscopic obesity surgery (LOS), and SIT, accessed via PubMed and Google Scholar databases. The case is presented of a 21-year-old female patient who underwent LSG due to SIT. A total of 12 publications in literature matched the search criteria for LAGB, LRYGB, LSG, LOS, and SIT, which reported LAGB in five cases, LRYGB in four cases, and LSG in four cases. In the rare event of SIT, LOS can be safely used following good evaluation.

Thoracoscopic esophagectomy for esophageal cancer with situs inversus totalis: a case report and literature review

A 63-year-old male visited our hospital, complaining of discomfort when swallowing. Upper gastrointestinal endoscopy revealed a type 2 tumor in the middle thoracic esophagus, which was diagnosed as squamous cell carcinoma by endoscopic biopsy. Computed tomography revealed situs inversus totalis (SIT). We assessed the relationship of the esophagus with neighboring organs using preoperative three-dimensional imaging. We performed thoracoscopic esophagectomy with radical lymph node dissection in the right decubitus position and hand-assisted laparoscopic gastric mobilization in the supine position. The definitive diagnosis was squamous cell carcinoma, pT2N1M0, pStage IIB according to the Union for International Cancer Control. The patient's postoperative course was uneventful, and 5 years post-operation, he is alive without recurrence. In SIT patients, surgical procedures are difficult because of anatomic transposition. Three-dimensional imaging effectively assesses the anatomical structure and contributes to safer thoracoscopic esophagectomy for esophageal cancer patients with SIT. Relevant literature is also discussed and reviewed.

Laparoscopic transperitoneoscopic nephroureterectomy in a patient with situs inversus totalis

This article discusses the case of a 78-year-old female with painless gross hematuria. Chest X-rays showed dextrocardia with situs inversus, and whole-body computed tomography scanning showed a renal mass in the right renal pelvis, no evidence of metastasis, and mirror-image organs with left-to-right transposition, which resulted in a diagnosis of situs inversus totalis (SIT). A laparoscopic transperitoneoscopic right nephroureterectomy was scheduled. To our knowledge, our case is the second case of laparoscopic nephroureterectomy in renal pelvic urothelial carcinoma with SIT to be presented, but it is the first case of laparoscopic transperitoneoscopic nephroureterectomy. Laparoscopic transperitoneoscopic nephroureterectomy was successfully performed in a renal pelvic urothelial carcinoma patient with SIT with a correct description of renal vascularity and abdominal anatomy.

Pancreaticoduodenectomy performed in a patient with situs ambiguous accompanied with isolated levocardia, malrotation, and normal spleen

We report a case of common bile duct (CBD) cancer, successfully managed with pancreaticoduodenectomy, in a patient with isolated levocardia, malrotation, and situs ambiguous (without splenic anomalies). A 59-year-old male patient was referred to Chung-Ang University Hospital with epigastric pain and jaundice. CT and MRI revealed distal CBD cancer without significant lymphadenopathy. Multiple abdominal anatomic anomalies were identified preoperatively, whereas no anatomic anomalies were detected within the chest. The patient had a right-sided stomach and spleen, liver at the midline, several vascular variations around the celiac axis, and intestinal malrotation, but the inferior vena cava and portal vein were normal. A pancreaticoduodenectomy was performed to treat the cancer. The postoperative course was favorable, and the patient was started on combined chemotherapy and radiotherapy 15 days after the surgery. In this case study, we report that pylorus preserving pancreaticoduodenectomy was successful for distal CBD cancer in a patient with rare situs anomalies.

Gastrostomy in a patient with situs inversus totalis

Situs inversus totalis (SIT) is a rare condition in which there is complete right to left reversal of the abdominal and thoracic organs. SIT generally does not bear any pathophysiological significance, and the survival rate of patients with SIT does not differ from that of healthy individuals. However, patients with SIT require a thorough radiological examination to identify the presence of associated anatomic variations before undergoing invasive procedures such as surgery or hemostasis of gastrointestinal hemorrhage because they may have accompanying abnormalities in anatomical structures along with reversed organs. Percutaneous endoscopic gastrostomy (PEG) is a relatively safe procedure that is most commonly performed for the enteral feeding of patients with dysphagia and a normal gastrointestinal function. However, the procedure requires extracaution because minor complications may lead to life-threatening situations due to the underlying illnesses. Here, we report the case of a patient with SIT who underwent a PEG procedure without complications, and review the existing literature on this subject.

Video-assisted thoracic surgery lobectomy for lung cancer in a patient with complete situs inversus

Complete situs inversus is a rare abnormality of autosomal recessive inheritance; it requires particular care during surgery, because the viscus anatomy is a mirror image of the normal anatomy. Reports of surgery for lung cancer in cases of complete situs inversus are very rare. Here, we report a case of lobectomy for lung cancer of the right lower lobe performed using video-assisted thoracic surgery (VATS) in a patient with complete situs inversus. We emphasize the importance of careful examination of the relationship between the bronchus, pulmonary artery, and pulmonary vein in the hilum of the lung in cases of complete situs inversus requiring lung resection for cancer; this is even more necessary when VATS is performed.

Idiopathic adult ileoileal and ileocolic intussusception in situs inversus totalis: a rare coincidence

Situs inversus totalis is a rare autosomal recessive congenital anomaly that is characterized by mirror image anatomy of the abdominal and thoracic organs. We report a case of a 28-year-old male with situs inversus totalis, who developed an idiopathic ileoileal and ileocolic intussusception, which was diagnosed on computed tomography scan. Patient underwent successfully ileal resection and side-to-side functional anastomosis of ileum 12 cms from ileocecal junction. Postoperative course was uneventful. To the best of our knowledge, this is the first case of idiopathic adult intussusception with situs inversus totalis in the literature.

Adenosquamous carcinoma of the lung in a patient with complete situs inversus

We present a rare case of adenosquamous carcinoma of the lung in a patient with complete situs inversus. The patient was a 76-year-old woman with the chief complaint of hemosputum. Chest X-ray and computed tomography (CT) scans of the thorax showed a mirror image of the organs and vessels and revealed a tumor 3.5 cm in diameter, in the left lower lung field. She was referred and admitted to KKR Hokuriku Hospital, Kanazawa, Japan to undergo surgery. Bronchoscopy showed a mirror image of the usual arrangement of the bronchi, and 5 segmental branches in the left lower bronchi. During surgery, care was exercised when intubation with the Univent bronchial tube for one-lung ventilation. On thoracotomy, the gross appearance of the left lung and the arrangement of the pulmonary vessels and the bronchi corresponded to those normally found on the right side. We were successful in performing a left lower lobectomy. Postoperative diagnosis confirmed an adenosquamous carcinoma with localized pleural dissemination as p-t4n1m0, stage IIIa. Preoperative imaging, including CT, bronchoscopy, and angiographic examination of the patient, will be useful for prevention of vascular or bronchial injury during surgery in patients with complete situs inversus undergoing lung resection. Possible vascular or bronchial anomalies should always be taken into consideration while operating on these patients.

Pancreatic adenocarcinoma in a patient with situs inversus: a case report of this rare coincidence

Background

Situs inversus (SI) is a relatively rare occurrence in patients with pancreatic adenocarcinoma. Pancreatic resection in these patients has rarely been described. CT scan imaging is a principle modality for detecting pancreatic cancer and its use in SI patients is seldom reported.

Case Presentation

We report a 48 year old woman with SI who, despite normal CT scan 8 months earlier, presented with obstructive jaundice and a pancreatic head mass requiring a pancreaticoduodenectomy. The surgical pathology report demonstrated pancreatic adenocarcinoma.

Conclusion

SI is a rare condition with concurrent pancreatic cancer being even rarer. Despite the rarity, pancreaticoduodenectomy in these patients for resectable lesions is safe as long as special consideration to the anatomy is taken. Additionally, radiographic imaging has significantly improved detection of early pancreatic cancer; however, there continues to be a need for improved detection of small neoplasms.

Laparoscopic adjustable gastric banding for morbid obesity in a patient with situs inversus totalis

Laparoscopic surgery with situs inversus may pose particular challenges to the surgeon. We discuss a case of undiagnosed situs inversus totalis in a morbidly obese patient undergoing laparoscopic adjustable gastric banding (LAGB). The patient was a 29-year-old male with a body mass index (BMI) of 56. There was no prior knowledge of his situs inversus totalis, which was only discovered during laparoscopy at the time of surgery. The operative challenges are discussed. LAGB was performed successfully without complication. Postoperative imaging confirmed dextrocardia and situs inversus totalis, as well as correct gastric band position. However, there has been subsequent gastric band erosion and eventual band removal. We discuss the appropriateness of LAGB in this group of patients.

Human situs inversus of the thoracoabdominal structures

Situs inversus totalis is well known, but its comprehensive description has been rare, especially on the internal view of the heart. For discussions based on recent results in developmental biology, the present study demonstrates a region- or part-specific manner of the inverted morphology found in a male donated cadaver and discusses the pathogenetic mechanisms of situs inversus in the human. Therein, clearly inverted morphologies existed in the coronary vessels, the apex position (dextracardia), connections between the heart and great vessels, the internal view of the atrium, the aortic arch with the three major branches, lung and liver segments and abdominal gastrointestinal tract. However, the ventricular internal view suggested incomplete laterality, such as tricuspid atrioventricular valves for both ventricles. The cardiac conductive system appeared not to be inverted but abnormal. The thoracic aorta and pulmonary artery took an L-spiral position with modifications. The inferior vena cava was located on the right side of the abdominal aorta. However, the left-sided kidney was located superior to the right-sided kidney. Similarly, the testicular vessels did not exhibit a clearly inverted morphology, but were almost normal. Therefore, the posterior mediastinal and retroperitoneal structures appeared to exhibit neutral laterality, incomplete inverted morphology or even normal morphology. According to the personal history and present histology, this specimen was unlikely to correspond to Kartagener's syndrome. The present observations seem to be consistent with recent findings in mutant models of laterality disturbances, in which a single gene or molecule is responsible for the changes in a region-specific manner.

Laparoscopic surgery in situs inversus: a literature review and a report of laparoscopic sigmoidectomy for diverticulitis in situs inversus

BACKGROUND

Situs inversus (SI) is a rare autosomal recessive congenital defect in which the position of abdominal and/or thoracic organs is a "mirror image" of the normal one, in the sagittal plain. In 25% of these cases, SI is part of the Kartagener syndrome, together with bronchiectasis and chronic sinusitis.

METHODS

We present a case of a patient with Kartagener syndrome and complete SI that was laparoscopically operated on for diverticulitis. We also review the published English information available on this rare condition.

RESULTS

A review of the literature revealed another single case of laparoscopic sigmoidectomy and 27 cases of other laparoscopic interventions in the presence of SI. Those laparoscopic procedures included basic procedures such as explorations and cholecystectomies, as well as advanced procedures such as gastrectomy and gastric bypass.

CONCLUSION

The laparoscopic approach is feasible in cases of SI, although technically more complicated because of the different position of the organs and the different laparoscopic view of the anatomy.