Anatomy 3 Flashcards
MRCS part A
Sarcomas
Typically in extremities
Sarcoma of adipocytes
Liposarcomas
Have pseudocapsule and typically found retroperitoneum
Resistant to radiotherapy
Ewings sarcoma
Usually blood borne mets
Respond to chemo + surgery
Hepatocellular adenomas
Associated with OCP and lack fibrous capsule
Typically not concerned if under 5cm
UNLESS in males as more likely to transform
Clotting not produced in liver
Factor VIII
Obstruction from RECTAL cancer
Loop colostomy
Obstruction from LEFT COLON cancer
Resection of lesion and end colostomy (Hartmann’s)
T4 RECTAL cancer
Requires irradiation prior to resection
T1, 2, 3 + N0 RECTAL cancer
No irradiation, straight resection
Ligament suspending duodenojejunal flexure
Ligament of Trietz
Thoracic duct
On left side of neck
Midpoint of internal jugular
Crossed by ansa cervicalis
Atlas: internal jugular
Crossed by accessory nerve
All last 4 cranial nerves related at this point to it
Superior sagittal sinus
Unpaired cranial sinus
Parietal emissary veins drained into it
Cerebral perfusion pressure
MAP - intracranial pressure
MAP
Diastolic pressure + 0.33 (Systolic pressure - diastolic pressure)
Number of collateral venous systems
4 Pathways
Azygos venous system
Internal mammary venous pathway
Long Thoracic to femoral and vertebral veins (2 pathways)
Main rectal vessels
Superior rectal artery from inferior mesenteric artery (arterial supply)
Middle rectal artery from the internal iliac artery
Inferior rectal artery from the internal pudendal artery
Main rectal lymph drainage
Mesorectal lymph nodes (superior to dentate line) Inguinal nodes (inferior to dentate line)
Propofol
Strong anti-emetic effect
CARDIAC DEPRESSION
Sodium Thiopentone
Marked myocardial depression
Etomidate
Safe cardiac profile
Adrenal suppression
Post operative vomiting
Orchiplexy
Caudal block
Inguinal Canal / laparoscopic
TAP block
Major abdominal surgery
Epidural
Lingual nerve
Purely sensory
If muscular deficit post submandibular gland excision then hypoglossal nerve
Contents of popliteal fossa (medial to lateral)
Popliteal artery - deep
Popliteal vein
Tibial nerve - superficial + medial esp inferiorly (sural branches on inferior aspect)
Common peroneal nerve
Otalgia after tonsillitis
Glossopharyngeal nerve is tonsils and ear
Renal scarring
DMSA scan
Pre-existing renal impairment
MAG-3
Nasopharyngeal carcinoma triad
Trotter’s triad
Unilateral conductive hearing loss
Ipsilateral facial & ear pain
Ipsilateral paralysis of soft palate
Radiotherapy is first line
Back of tongue
Bilateral lymph (deep cervical) drainage
Bochdalek hernia
3 P & 3 B
1- Birth defect (congenital) 2- Big 3- Bad Prognosis 4- Posterior located 5- Pulmonary hyPoPlais is common 6- Placement of mesh may be needed to treat
Rectal fascial layers
Denonvilliers anteriorly (bladder)
Waldeyers posteriorly (sacrum)