Trochanteric bursitis is characterized by pain in the lateral hip/thigh area, accompanied by tenderness over the greater trochanter. This condition, also known as greater trochanteric pain syndrome, is likely the cause of the patient’s symptoms, as there are no other systemic issues present. Iliotibial band syndrome typically affects the knee and does not usually cause nighttime symptoms, making it an unlikely diagnosis in this age group. Meralgia paresthetica, which results from compression of the lateral femoral cutaneous nerve, typically presents with numbness or tingling rather than pain. Osteoarthritis is unlikely to cause pain upon direct pressure over the greater trochanter.

Understanding Greater Trochanteric Pain Syndrome

Greater trochanteric pain syndrome, also known as trochanteric bursitis, is a condition that results from the repetitive movement of the fibroelastic iliotibial band. This condition is most commonly observed in women aged between 50 and 70 years. The primary symptom of this condition is pain experienced over the lateral side of the hip and thigh. Additionally, tenderness is observed upon palpation of the greater trochanter.

The most effective way to confirm a diagnosis of ankylosing spondylitis is through the detection of sacro-ilitis on a pelvic X-ray. This condition is commonly found in males between the ages of 20 and 30. While radiographs may not show any abnormalities in the early stages of the disease, later changes may include sacroiliitis, lumbar vertebrae squaring, and bamboo spine. ANA and rheumatoid factor tests are not useful in diagnosing ankylosing spondylitis, as they are positive in other autoimmune diseases. HLA-B27 testing is also not a reliable indicator, as it can be positive in individuals with or without the disease. Inflammatory markers such as ESR and CRP are often elevated in patients with ankylosing spondylitis, but normal levels do not necessarily rule out the condition.

Investigating and Managing Ankylosing Spondylitis

Ankylosing spondylitis is a type of spondyloarthropathy that is associated with HLA-B27. It is more commonly seen in males aged 20-30 years old. Inflammatory markers such as ESR and CRP are usually elevated, but normal levels do not necessarily rule out ankylosing spondylitis. HLA-B27 is not a reliable diagnostic tool as it can also be positive in normal individuals. The most effective way to diagnose ankylosing spondylitis is through a plain x-ray of the sacroiliac joints. However, if the x-ray is negative but suspicion for AS remains high, an MRI can be obtained to confirm the diagnosis.

Management of ankylosing spondylitis involves regular exercise, such as swimming, and the use of NSAIDs as the first-line treatment. Physiotherapy can also be helpful. Disease-modifying drugs used for rheumatoid arthritis, such as sulphasalazine, are only useful if there is peripheral joint involvement. Anti-TNF therapy, such as etanercept and adalimumab, should be given to patients with persistently high disease activity despite conventional treatments, according to the 2010 EULAR guidelines. Ongoing research is being conducted to determine whether anti-TNF therapies should be used earlier in the course of the disease. Spirometry may show a restrictive defect due to a combination of pulmonary fibrosis, kyphosis, and ankylosis of the costovertebral joints.

Relative Risk Reduction in Medical Publications

When reading medical publications, it is important to understand the concept of relative risk reduction. This calculation compares the risk of an event occurring in one group (such as patients taking a new medication) to the risk in another group (such as patients taking a standard medication).

For example, if a study found that a new medication reduced the risk of stroke by 1.5%, compared to a standard medication, the absolute risk reduction would be 1.5%. However, the relative risk reduction would be 50%, because the new medication reduced the risk of stroke by half compared to the standard medication.

It is important to note that while a relative risk reduction may sound impressive, it is crucial to also consider the absolute risk reduction. In the example above, while the relative risk reduction is 50%, the actual number of strokes prevented is only 15 per 1000 patients treated. both the relative and absolute risk reduction can help healthcare professionals make informed decisions about treatment options.

Common Neonatal Head Injuries: Causes, Symptoms, and Differences

Cephalohaematoma, Caput succedaneum, Cephalocele, and Subgaleal haemorrhage are common neonatal head injuries that can occur during birth. Understanding the causes, symptoms, and differences between these injuries is important for proper diagnosis and treatment.

Cephalohaematoma is a subperiosteal haemorrhage that occurs in 1-2% of live births, usually associated with a prolonged second stage of labour. It presents as a well-circumscribed, fluctuant mass over the parietal bone, and does not cross suture lines. Complications such as anaemia and jaundice can result from a cephalohaematoma, depending on its size.

Caput succedaneum is a form of birth trauma caused by pressure exerted on the presenting part by the cervix during the first stage of labour. It presents as diffuse swelling of the scalp and is associated with moulding. It can cross the midline and extends over suture lines. It resolves over the course of the first few days of life.

Cephalocele is a rare congenital condition where brain herniation occurs through a defect in the cranium. It is usually detected antenatally and most commonly presents in the midline.

Subgaleal haemorrhage is most commonly associated with instrumental delivery, caused by rupture of the emissary veins connecting the dural sinuses with the scalp veins. It presents as a fluctuant mass over the occiput, with superficial skin bruising 12-72 hours post-delivery. It may cross suture lines and pass over fontanelles, distinguishing it from a cephalohaematoma.

It is important to note that non-accidental injury should always be considered in cases of unexplained head injuries. However, in the absence of any concerning features, a cephalohaematoma or other neonatal head injury is likely due to birth trauma and can be managed accordingly.

Investigations for Cranial Swellings in Neonates

Cranial swellings in neonates can be a cause for concern, and prompt investigation is necessary to rule out serious conditions such as subgaleal haemorrhage. The following are some common investigations used to diagnose cranial swellings in neonates:

Cranial Ultrasound Scan
This is the investigation of choice and can be done quickly and safely by Neonatal Consultants and most Paediatric Registrars on Neonatal placement. The scan can provide a significant amount of information, and the key finding to look for is whether the swelling crosses the cranial suture lines. If it does, this should be a cause for concern as it may indicate subgaleal haemorrhage.

Cerebral Function Monitoring
This investigation is used to monitor a neonate’s neurological state and identify seizure activity. However, it is not necessary in cases where the baby appears neurologically normal, as in the case of cranial swellings.

Cranial Computed Tomography (CT) Scan
This investigation exposes the baby to unnecessary radiation and is not recommended as the first choice. If the findings from the cranial ultrasound scan are unclear, an MRI scan is the next investigation of choice.

Cranial Magnetic Resonance Imaging (MRI) Scan
This investigation is not the first choice and is only done after a cranial ultrasound scan. It provides detailed information about the cranial swelling and can help diagnose conditions such as subgaleal haemorrhage.

Liver Function Tests
Liver function tests are not part of the initial workup for cranial swellings. However, they may be done at some point during admission for other reasons, such as the risk of jaundice secondary to possible extra-/intracranial haemorrhage.

The only medication from the given list that inhibits the P450 system is isoniazid. This is relevant in the case of a patient who has suffered a haemorrhagic stroke and has a high INR due to warfarin not being cleared away by the P450 system, which is being inhibited. Carbamazepine, on the other hand, is a P450 inducer and would be expected to lower INR levels. Paracetamol does not significantly affect the P450 system, but is itself affected by it, leading to liver failure. Rifampicin, like isoniazid, is an antibiotic used in the treatment of tuberculosis, but it is a P450 inducer, not an inhibitor.

P450 Enzyme System and its Inducers and Inhibitors

The P450 enzyme system is responsible for metabolizing drugs in the body. Induction of this system usually requires prolonged exposure to the inducing drug, unlike P450 inhibitors, which have rapid effects. Some drugs that induce the P450 system include antiepileptics like phenytoin and carbamazepine, barbiturates such as phenobarbitone, rifampicin, St John’s Wort, chronic alcohol intake, griseofulvin, and smoking, which affects CYP1A2 and is the reason why smokers require more aminophylline.

On the other hand, some drugs inhibit the P450 system, including antibiotics like ciprofloxacin and erythromycin, isoniazid, cimetidine, omeprazole, amiodarone, allopurinol, imidazoles such as ketoconazole and fluconazole, SSRIs like fluoxetine and sertraline, ritonavir, sodium valproate, and acute alcohol intake. It is important to be aware of these inducers and inhibitors as they can affect the metabolism and efficacy of drugs in the body. Proper dosing and monitoring can help ensure safe and effective treatment.

Biliary atresia is a condition that usually manifests within the first few weeks of a newborn’s life, characterized by jaundice, poor appetite, and growth issues. It is a common cause of prolonged neonatal jaundice that appears after two weeks. Other symptoms include an enlarged liver and spleen, abnormal growth, and heart murmurs if there are associated cardiac abnormalities. Conjugated bilirubin levels are abnormally high, while bile acids and aminotransferases are also typically elevated, but cannot be used to distinguish between biliary atresia and other causes of neonatal cholestasis. Although bile duct stenosis may present similarly, it is less frequent.

Understanding Biliary Atresia in Neonatal Children

Biliary atresia is a condition that affects the extrahepatic biliary system in neonatal children, resulting in an obstruction in the flow of bile. This condition is more common in females than males and occurs in 1 in every 10,000-15,000 live births. There are three types of biliary atresia, with type 3 being the most common. Patients typically present with jaundice, dark urine, pale stools, and abnormal growth.

To diagnose biliary atresia, doctors may perform various tests, including serum bilirubin, liver function tests, serum alpha 1-antitrypsin, sweat chloride test, and ultrasound of the biliary tree and liver. Surgical intervention is the only definitive treatment for biliary atresia, and medical intervention includes antibiotic coverage and bile acid enhancers following surgery.

Complications of biliary atresia include unsuccessful anastomosis formation, progressive liver disease, cirrhosis, and eventual hepatocellular carcinoma. However, the prognosis is good if surgery is successful. In cases where surgery fails, liver transplantation may be required in the first two years of life. Overall, understanding biliary atresia is crucial for early diagnosis and effective management in neonatal children.

Choosing the Right Imaging Test for Thoracic Spine Assessment After Surgery

When assessing a patient with a history of spinal fusion surgery, it is important to choose the appropriate imaging test to avoid potential harm. In this case, computed tomography (CT) of the thoracic spine would be the most useful investigation, as magnetic resonance imaging (MRI) is contraindicated due to the metal rods used in the surgery. Conventional radiography may be useful for initial assessment, but CT provides more detailed information. Ultrasonography is not useful in this context, and fluoroscopy is more appropriate for interventional radiology. It is crucial to consider the patient’s surgical history when selecting the appropriate imaging test.

Type II diabetes is commonly diagnosed in patients over 40 years old, with many patients showing no symptoms. However, when symptoms do occur, they often include increased thirst (polydipsia), frequent urination (polyuria), excessive hunger (polyphagia), blurred vision, yeast infections (balanitis in men), peripheral neuropathy, and bed-wetting (nocturnal enuresis) in younger patients with type I diabetes. While patients with type II diabetes are often overweight, they typically present with recent weight loss rather than weight gain. Markedly elevated ketones are not a common presentation of type II diabetes, but may occur in advanced stages of the disease. Oliguria, or decreased urine output, is not typically seen in patients with type II diabetes, as they tend to experience excessive thirst and increased urine output.

Investigation is necessary for any postmenopausal bleeding. The first step is to conduct a transvaginal ultrasound scan to examine the thickness of the endometrium. To diagnose endometrial cancer, a Pipelle biopsy is used to sample the endometrium, which is effective in most cases. Hysteroscopy with directed sampling (dilation and curettage) can be used to detect lesions or when Pipelle has been inconclusive. CT scan is not required as a pre-operative imaging test nor is it used to diagnose endometrial cancer.
Reference: Colombo N, Preti E, Landoni F, Carinelli S, Colombo A, et al. Endometrial cancer: ESMO clinical practice guidelines for diagnosis, treatment and follow-up. Ann Oncol. 2013; 24 (6): vi33-vi38.

Endometrial cancer is a type of cancer that is commonly found in women who have gone through menopause, but it can also occur in around 25% of cases before menopause. The prognosis for this type of cancer is usually good due to early detection. There are several risk factors associated with endometrial cancer, including obesity, nulliparity, early menarche, late menopause, unopposed estrogen, diabetes mellitus, tamoxifen, polycystic ovarian syndrome, and hereditary non-polyposis colorectal carcinoma. Postmenopausal bleeding is the most common symptom of endometrial cancer, which is usually slight and intermittent initially before becoming more heavy. Pain is not common and typically signifies extensive disease, while vaginal discharge is unusual.

When investigating endometrial cancer, women who are 55 years or older and present with postmenopausal bleeding should be referred using the suspected cancer pathway. The first-line investigation is trans-vaginal ultrasound, which has a high negative predictive value for a normal endometrial thickness (< 4 mm). Hysteroscopy with endometrial biopsy is also commonly used for investigation. The management of localized disease involves total abdominal hysterectomy with bilateral salpingo-oophorectomy, while patients with high-risk disease may have postoperative radiotherapy. progesterone therapy is sometimes used in frail elderly women who are not considered suitable for surgery. It is important to note that the combined oral contraceptive pill and smoking are protective against endometrial cancer.