Methods and systems for marking post biopsy cavity sites

A soft tissue marker for delivery to a biopsy site within a patient, comprising:

• a plurality of discrete substantially non-swellable elements, each being formed of at least one of a porous material and a non-porous material, and
• a radiopaque element disposed adjacent to at least one of the plurality of discrete substantially non-swellable elements, the radiopaque element being external to and uncoupled from each of the plurality of discrete substantially non-swellable elements.

A soft tissue marker for delivery to a cavity within a patient, comprising:

• a plurality of discrete echogenic and biodegradable elements;
• a radiopaque element disposed adjacent to at least one and external to each of the plurality of discrete echogenic and biodegradable elements, and
• a biodegradable string coupling at least some of the plurality of discrete echogenic and biodegradable elements.

A soft tissue marker for delivery to a cavity within a patient, comprising:

• a plurality of discrete echogenic and biodegradable elements, each of the plurality of discrete echogenic and biodegradable elements defining a longitudinal axis and including at least one of a leading and a trailing surface that is inclined away from a normal to the longitudinal axis, and
• a radiopaque element disposed adjacent to at least one and external to each of the plurality of discrete echogenic and biodegradable elements.

A soft tissue marker for delivery into a cavity within a patient, comprising:

• a first echogenic and biodegradable element that defines a first plurality of crenellations that define a corresponding first plurality of locally thinner and thicker portions;
• a second echogenic and biodegradable element that defines a second plurality of crenellations that define a corresponding second plurality of locally thinner and thicker portions, and
• a radiopaque element disposed adjacent to at least one of the first and second echogenic and biodegradable elements and external to each of the first and second echogenic and biodegradable elements.