This anatomical diagram presents three perspectives of the human vertebral column: anterior view, right lateral view, and posterior view. The illustration categorizes the 33 vertebrae into five distinct regions, color-coded for clarity: cervical (C1–C7), thoracic (T1–T12), lumbar (L1–L5), the fused sacrum (S1–S5), and the coccyx. Key anatomical landmarks are labeled, including the Atlas (C1) and Axis (C2). The anterior and posterior views demonstrate the vertical alignment and central symmetry of the spine. The right lateral view illustrates the physiological curvatures of the column, showing the cervical lordosis (inward curve), thoracic kyphosis (outward curve), lumbar lordosis (inward curve), and the sacrococcygeal curve. This comparison highlights the structural organization of individual vertebrae, the intervertebral discs, and the overall S-shaped profile necessary for balance and shock absorption. The diagram serves as a foundational educational tool for understanding spinal anatomy, regional segmentation, and normal postural curvature in clinical and musculoskeletal medicine.

A clinical photograph of the posterior aspect of a patient's upper back and neck region, demonstrating a 'buffalo hump' (dorsocervical fat pad). The image shows a prominent, localized accumulation of subcutaneous adipose tissue in the upper thoracic and lower cervical region, creating a rounded, convex deformity between the shoulder blades and at the base of the neck. The skin overlying the fat pad appears stretched but otherwise intact, with subtle hyperpigmentation and scattered small macules. This physical finding is a classic clinical manifestation of hypercortisolism (Cushing's syndrome), characterized by centripetal fat redistribution. The photograph is taken from a posterior-superior perspective, highlighting the anatomical prominence relative to the scapulae and spine, which is useful for medical students and clinicians in identifying physical signs of endocrine dysfunction.

This clinical photograph shows a lateral view of the posterior neck and upper back of a patient, demonstrating a prominent dorsocervical fat pad, commonly referred to as a 'buffalo hump.' The anatomical region involved is the posterior cervicothoracic junction, specifically overlying the C7-T1 vertebrae. The growth is characterized by a rounded, localized accumulation of adipose tissue that protrudes posteriorly, altering the natural contour of the neck and upper spine. The overlying skin appears intact with visible fine terminal hairs and follicular orifices, typical of the nuchal region. No acute inflammatory signs, ulceration, or primary skin lesions are visible on the surface of the fat pad. This clinical finding is frequently associated with metabolic disturbances, hypercortisolism (Cushing's syndrome), or certain pharmacological side effects, such as those seen in antiretroviral therapy for HIV. The image serves as an educational example of abnormal fat distribution (lipodystrophy) in a clinical diagnostic context.

Clinical photograph presenting characteristic physical stigmata of Cushing's syndrome in a patient. Panel A displays a top-down view of the patient's forearm and antecubital fossa, demonstrating significant skin fragility and easy bruisability. Multiple irregular, confluent, purplish-red ecchymotic patches and smaller petechiae are visible across the skin surface. Clinical equipment, including multiple hospital identification bands and an indwelling intravenous catheter with a blue-and-white luer-lock hub, is present on the arm. Panel B illustrates the posterior neck and upper back of the same patient, highlighting a dorsocervical fat pad, commonly known as a 'buffalo hump.' This finding appears as a distinct, rounded, soft-tissue prominence at the level of the cervicothoracic junction, creating an abnormal posterior contour. These visual findings are hallmark cutaneous and musculoskeletal manifestations of hypercortisolism, useful for medical students and clinicians in identifying metabolic or endocrine dysfunction during physical examination.